Fisher 1051 & 1052 Actuator

Product Bulletin
1051 and 1052 Actuators 61.1:1051

D100089X012 February 2013
Fisherr 1051 and 1052 Diaphragm Rotary

Actuators
Fisher 1051 and 1052 spring-return diaphragm rotary
actuators operate splined shaft rotary valves, such as
eccentric disc (8510B and 8560), 8532 and 9500,
CV500 and V500 and Vee-Ballt (V150, V200 and
V300) valves. 1051 and 1052 actuators are both
suitable for on-off service or for throttling service. The
primary difference between these actuators is that the
1052 actuator has a spring adjuster (see figure 1)
which means it may be used with or without a
positioner, depending on service requirements. The
1051 actuator, in throttling service, is normally
equipped with a valve positioner. Refer to separate
bulletins for valve and positioner information.
Both actuator types are designed for easy installation W8172-3

SIZE 33
of a broad range of options: limit switches, position
indicating switches, positioners, and manual
over-rides. Option applicability varies with actuator
size. Refer to the specifications table and table 4 for
information concerning option applicability and
specifications.
Features
 Application Flexibility-- 1051 and 1052 rotary
actuators are available with fail-open or fail-close
construction and can be mounted in any of four
actuator-valve mounting positions. See figure 7 for
mounting positions. These actuators can be
mounted on a broad range of Fisher valves (style F
or G mounting), or used with other equipment
(style H or J mounting).
W8508-3
 Minimal Dead Band-- Single joint linkage with
SIZE 60
splined and clamped lever minimizes lost motion
and improves control accuracy. Typical Fisher 1052 Actuators with Vee-Ball Valves and
FIELDVUE™ DVC6200 Digital Valve Controllers
 Long Service Life-- Rugged construction provides
stability, corrosion resistance, and protection from
deformation should over-pressurization occur. 2 and 3). For safety during disassembly, spring
compression is controlled on the 1051 actuator.
 Safety-- Actuator-valve linkage is completely The 1052 actuator has an externally accessible
enclosed, yet the valve packing adjustment remains spring adjuster to relieve spring compression (see
accessible without removing any parts (see figures figure 1).
www.Fisher.com
Product Bulletin
61.1:1051 1051 and 1052 Actuators
February 2013 D100089X012
Specifications
Available Configurations Size 70: J 31.8 (1-1/4), J 38.1 (1-1/2),

J 1051: For on-off service or for throttling J 44.5 (1-3/4), or J 50.8 (2)
J 1052: For on-off service without a positioner or for
throttling services with or without a positioner
Direct Acting: Increasing loading pressure extends Maximum Breakout Torque(2)
the diaphragm rod out of the spring barrel 1051:
Size 33: Up to 85 NSm (756 lbfSin)
Actuator Sizes Size 40: Up to 322 NSm (2850 lbfSin)
1051: J 33, J 40, and J 60 Size 60: Up to 626 NSm (5540 lbfSin)
1052: J 20, J 33, J 40, J 60, and J 70 1052:
Standard Diaphragm Pressure Ranges Size 20: Up to 42 NSm (370 lbfSin)
Size 33: Up to 132 NSm (1166 lbfSin)
Sizes 20 and 60: J 0 to 1.2 bar (0 to 18 psig), J 0 to Size 40: Up to 371 NSm (3280 lbfSin)
2.3 bar (0 to 33 psig), and J 0 to 2.8 bar (0 to 40 psig) Size 60: Up to 730 NSm (6460 lbfSin)
Sizes 33 and 40: J 0 to 1.2 bar (0 to 18 psig), J 0 to Size 70: Up to 1370 NSm (12,100 lbfSin)
2.3 bar (0 to 33 psig), J 0 to 2.8 bar (0 to 40 psig),
and J 0 to 3.8 bar (0 to 55 psig) Stroking Time
Size 70: J 0 to 2.3 bar (0 to 33 psig), J 0 to 2.8 bar (0 Dependent on actuator size, rotation, spring rate,
to 40 psig), and J 0 to 3.8 bar (0 to 55 psig) initial spring compression, supply pressure, and size
of supply piping. If stroking time is critical, consult
Maximum Diaphragm Sizing Pressure(1) your Emerson Process Management sales office
Size 20: 3.4 bar (50 psig)
Size 33: 3.8 bar (55 psig) Diaphragm Casing Displacement
Size 40: 4.5 bar (65 psig) See table 1
Size 70: 3.8 bar (55 psig) Construction Materials
Maximum Diaphragm Casing Pressure(5) See table 3
Size 20: 4.1 bar (60 psig) Material Temperature Capabilities(1)

Size 40: 5.2 bar (75 psig) Nitrile Diaphragm or O-Rings(3): -40 to 82_C (-40 to
Size 60: 3.4 bar (50 psig) 180_F)
Size 70: 4.5 bar (65 psig) Silicone Diaphragm: -40 to 149_C (-40 to 300_F)
Polyoxymethylene (POM) Push Rods and Guides: -40
Nominal Valve Shaft Rotation to 82_C (-40 to 180_F)(4) (POM rod and guides are
J 90 degrees (standard) or J 60 degrees (optional) used with lever operated switches for size 33
for both actuators, or J 75 degrees (optional) for actuators only.)
1052 actuator only
Travel Indication
Valve Shaft Diameters, mm (Inches) Graduated scale and pointer combination located on
Size 20: J 9.5 (3/8), or J 12.7 (1/2) actuator end of valve drive shaft
Size 33: J 12.7 (1/2), J 15.9 (5/8), or J 19.1 (3/4)
Size 40: J 12.7 (1/2), J 15.9 (5/8), J 19.1 (3/4), Pipe or Tubing Connections
J 22.2 (7/8), J 25.4 (1), or J 31.8 (1-1/4)
Size 60: J 19.1 (3/4), J 22.2 (7/8), J 25.4 (1), or Standard: 1/4 NPT internal
J 31.8 (1-1/4), J 38.1 (1-1/2), J 44.5 (1-3/4), or Optional: J 1/2 or J 3/4 NPT internal,
J 50.8 (2) and J 3/4 NPT Pipe-Away vent opening
(continued)
2
Product Bulletin
1051 and 1052 Actuators 61.1:1051
Specifications (continued)
Mounting Positions Options

See figure 7 Option applicability varies with actuator size. Refer to
Approximate Weights table 4 and the Options section.
See table 2
1. Use this value to determine the maximum torque output. The pressure/temperature limits in this bulletin and any applicable standard or code limitation for the actuator should not be
exceeded.
2. Actual actuator torque available depends on specific construction and casing pressure. For information on torque requirements of the valve being considered, contact your Emerson Process
Management sales office.
3. Nitrile O-rings are used in the optional top-mounted handwheel and in the optional up and down travel stop assemblies.
4. For higher temperature ratings, contact your Emerson Process Management sales office.
5. This maximum casing pressure is not to be used for normal operating pressure. Its purpose is to allow for typical regulator supply settings and/or relief valve tolerances.
Options applications without a positioner. For additional

information, contact your Emerson Process
Management sales office with complete service
Top-Mounted Handwheel: For infrequent use as a
conditions.
manual actuator or for use as an adjustable up travel
stop (see figure 6). For repeated or daily manual
Adjustable Down-Travel Stop: Used to limit the
operation, the unit should be equipped with a
actuator stroke in the downward direction (see figures
declutchable handwheel actuator.
4 and 5). Not available for size 20 and 33 actuators.
Declutchable Handwheel Actuator: A side-mounted Adjustable Up-Travel Stop: Used to limit the actuator
manual actuator can be used to provide on-site control stroke in the upward direction (see figures 4 and 5).
and to provide override capabilities. Not available for Though these assemblies may be installed on the size
size 20 actuators. See bulletin 61.8:1078 for 20 and 33 actuators, they are not necessary for
handwheel actuator specifications. standard operation because the size 20 and 33
actuators have integral travel stops.
Limit Switches: J Micro-Switch or NAMCO switches
for one or two single-pole, double-throw contacts, or Actuator Locking Mechanism: For size 33 actuators
J GOt proximity switches for one or two single-pole, (figure 8) and size 40, 60, and 70 actuators (figure 9),
double-throw contacts are available (see figure 5). an actuator locking mechanism is available. It can be
Proximity switches are not available for 1052 size 70 used to keep the actuator in a locked position (the
actuators. See separate bulletins for limit switch same as the spring-fail position) during maintenance.
information. The padlock is customer supplied, and the mechanism
requires a modified actuator housing.
Position Indicating Switch: TopWorx™ DXP M21GNEB
switch for one through six single pole, double throw Pipe Away Vent: Some applications use natural gas or
switch contacts are available. See separate bulletin for other hazardous gases as a supply pressure to the
position indicating switch information. actuator. These applications sometimes require the
actuator housing to be vented, reducing the
Positioner: For precise positioning of the valve disc or accumulation of gases. For new constructions and
ball, the actuator should be equipped with a retrofit kit information, contact your Emerson Process
positioner. Under some service conditions, the 1052 Management sales office with complete service
actuator may be used successfully in these conditions.
3
Product Bulletin
61.1:1051 1051 and 1052 Actuators
Table 1. Diaphragm Casing Displacement Table 3. Construction Materials

CASING VOLUME(2) PART ACTUATOR MATERIAL
CLEARANCE
CASING 60 Degree 90 Degree Actuator
VOLUME(1)
SIZE Rotation Rotation Actuator Housing and
cm3 Inches3 cm3 Inches3 cm3 Inches3 All Cast iron
Spring Barrel(1)
20 655 40 1098 67 1245 76 20 Nitrile on nylon
33 623 38 1890 115 2390 146 Diaphragm Nitrile on nylon or
33, 40, 60, and 70
40 1050 64 4100 250 5410 330 silicone on polyester
60 3540 216 11,600 708 15,200 927 33, 40, and 60 Aluminum
Diaphragm Head
70 3490 213 13,929 850 19,025 1161 70 Cast Iron
1. Volume when the diaphragm is in the up position. Diaphragm Casing(1) All Pressed steel
2. Includes clearance volume.
Diaphragm Rod All Steel
20 Steel
Table 2. Approximate Actuator Weights
33 Aluminum
TOP-MOUNTED Housing Cover
1051 ACTUATOR 1052 ACTUATOR Cast iron or
SIZE HANDWHEEL 40, 60, and 70
aluminum
Kg Pounds Kg Pounds Kg Pounds
20 Steel
20 --- --- 14 30 5.0 11 Lever
33, 40, 60, and 70 Ductile iron
33 20 45 21 46 5.0 11
Optional Top-Mounted Handwheel Assembly
40 43 94 45 99 7.3 16
Handwheel and
60 89 197 92 203 11 24 All Cast iron
Handwheel Body
70 --- --- 123 272 21.3 47
Handwheel Stem All Bronze
O-Rings All Nitrile
Figure 1. Sectional Views of Spring Seat Construction
20, 33, 40, and 60 Steel
Details Pusher Plate
70 Cast iron or steel
Optional Down Travel Stop Assembly
Closing Cap 40, 60 and 70 Brass
O-ring 40, 60 and 70 Nitrile
Stem 40, 60 and 70 Stainless steel
Travel Stop Body 40, 60 and 70 Cast iron
Optional Up Travel Stop Assembly
Closing Cap All Brass
W4742-2crop W4740-2
O-Ring All Nitrile
TYPICAL OF THE 1052 TYPICAL OF THE 1051 Stem All Bronze
ACTUATOR WITH ACTUATOR WITH Travel Stop Body All Cast iron
ADJUSTABLE SPRING SEAT NON-ADJUSTABLE 1. Housing, lower diaphragm casing, and spring barrel are an integral casing for sizes
SPRING SEAT 20 and 33.
4
Product Bulletin
1051 and 1052 Actuators 61.1:1051
Figure 2. Sectional Views Typical of Size 40, 60,and 70 Actuators
W3813-1 W2291-3
Figure 3. Sectional Views of the Size 33 Actuator
W4742-2 W4741-2
5
Product Bulletin
61.1:1051 1051 and 1052 Actuators
Figure 4. Optional Adjustable Travel Stops
28A1761-B
TYPICAL ADJUSTABLE UP TRAVEL STOP
36A6250-B
TYPICAL ADJUSTABLE DOWN TRAVEL STOP
6
Product Bulletin
1051 and 1052 Actuators 61.1:1051
Table 4. Construction Features and Option Applicability by Actuator Size

ACCESSORY SWITCH
STANDARD TRAVEL STOP OPTIONAL TRAVEL STOP
OPTIONAL MOUNTING
ACTUATOR ACTUATOR
MANUAL Proximity Mechanically
SIZE TYPE Range of Range of
Style Style OVERRIDE (GO) Operated
Adjustability Adjustability
Switches Switches
Internally 30 degrees Externally
Top-mounted
adjustable up-travel and mounted,
20 1052 handwheel
up-travel stop and 30 degrees lever
Top-mounted only
down-travel stop down-travel operated
up-travel stop
1051 Externally 35 degrees only Integrally
Top-mounted
adjustable up-travel and mounted, Externally
33 handwheel
up-travel stop and 35 degrees actuated by mounted,
1052 90 degrees for infrequent
down-travel stop down-travel internal cams lever
operation or
1051 operated
40 Top-mounted side-mounted Externally
1052 up-travel stop manual mounted,
Not actuator for lever
1051 Fixed or
60 applicable routine operated
1052 down-travel
stop operation
70 1052 Not available
Figure 5. Size 33 Actuator with Externally Adjustable Figure 6. Top-Mounted Handwheel

Travel Stops and Integrally Mounted, Cam Operated
Proximity Switches
UP TRAVEL STOP
DOWN PROXIMITY
W4738
TRAVEL SWITCHES
STOP
W3145
7
Product Bulletin
61.1:1051 1051 and 1052 Actuators
Table 5. Mounting Styles and Positions

VALVE SERIES OR DESIGN VALVE SERIES OR DESIGN
MOUNTING ACTION(1) BALL/PLUG DISC/BALL 8510B, 8532,

V150, V200 and CV500 and
ROTATION V250 ROTATION V250 8560 and
V300 V500
TO CLOSE TO CLOSE 9500
PDTC CCW(3) A A A CW NA B
Right-Hand
PDTO CCW B B B CW NA A
PDTC CCW NA D D CW C C
Left-Hand
PDTO CCW NA C C CW D D
Left-Hand PDTC CW(4) NA C NA NA NA NA
(Optional)(2) PDTO CW NA D NA NA NA NA
1. PDTC–Push-down-to-close, and PDTO–Push-down-to-open.
2. A left hand ball will be required for NPS 3 through 12 V150, V200 and V300, Series B and NPS 14 through 20, with or without an attenuator.
3. CCW = counterclockwise
4. CW = clockwise
Figure 7. Mounting Styles and Positions (also see table 5)

STYLE A STYLE B
POSITION 1 1 POSITION 1 1
STYLE D
FLOW
STYLE C
2 4
LEFT-HAND
MOUNTING 4 2
3 3
RIGHT-HAND MOUNTING
STYLE D STYLE C
STYLE B
STYLE A POSITION 1 1 POSITION 1 1
FLOW
2 4
4 2
3 3
RIGHT-HAND
MOUNTING LEFT-HAND MOUNTING
43A6505-A
A1584-3
Notes:
1 Position 1 is standard; Positions 2 through 4 (shown in dotted lines) are alternatives.
8
Product Bulletin
1051 and 1052 Actuators 61.1:1051
Figure 8. Actuator Locking Mechanism for Size 33 Figure 9. Actuator Locking Mechanism for Sizes 40,
60, and 70
CAP SCREW MOUNTING PLATE
ACTUATOR
LEVER
MOUNTING PLATE ASSY
COVER
MODIFIED
ACTUATOR
HOUSING
PADLOCK
LOCKNUT (CUSTOMER
SUPPLIED)
PADLOCK CAP GROOVE

(CUSTOMER SUPPLIED) SCREW PIN LOCKING
MECHANISM
24B0391-A
A6226
A6019-2
Installation
The actuator is normally positioned vertically in a Adjustable Travel Stops
horizontal pipeline. Four mounting styles and four
positions for each style are possible (see figure 7). Due Adjustable travel stops (in addition to those shown in
to its weight, the 1052 size 70 actuator must be figure 4) are available as discussed below.
externally supported if mounted in the horizontal
position.
As used here, down or downward means in a direction
When looking in the direction of flow in the pipeline, toward the valve shaft and away from the piston and
an actuator is right-hand mounted when it is on the diaphragm.
right side of the pipeline, and an actuator is left-hand
mounted when it is mounted on the left side of the
pipeline. An adjustable down travel stop for 1051 (size 40 and
60) and 1052 (size 30, 40, 60, and 70) is installed in a
By Emerson Process Management definition, forward special actuator housing. The assembly consists of a
flow is into the face side of the disc or ball, and reverse special housing, cap screw, locknut, lever, and rod end
flow is into the hub side of the disc or ball. bearing. The cap screw can be positioned to limit
downward travel of the actuator lever to any rotation
Dimensions for both actuator types are shown in figure between 0 and 90 degrees.
10. These dimensions should be used in conjunction
with the mounting positions shown in figure 7. Make
clearance considerations before mounting the The locking mechanism shown in figures 8 and 9 is not
actuator to determine the most suitable mounting to be used as a travel stop. Please specify an adjustable
position. travel stop assembly instead.
9
Product Bulletin
61.1:1051 1051 and 1052 Actuators
Figure 10. Dimensions (also see tables 6, 7 and 8)
JC DIA
T
1/4-18
HC
NPT
W DIA
REFERENCE A
E
U
14A7221-D
A3023
TOP-MOUNTED T
HANDWHEEL
W DIA
14A7222-F
A2206-4
REFERENCE B
ACTUATOR/VALVE BODY
1/2-14 NPT
SIZE 70 MOUNTING DIMENSIONS
C DIA 1/4-18 NPT
SIZE 20, 40, & 60
C DIA 1/4-18
NPT
E
E
H H
F Y H F Y
P V P V
14A7222-F
16A0600-B 1052 SIZE 20, 40, 60, 1051 AND 1052 SIZE 33 1051 SIZE 40
B1412-4
AND 70 ACTUATOR ACTUATOR ONLY AND 60 ACTUATOR
10
Product Bulletin
1051 and 1052 Actuators 61.1:1051
Table 6. Dimensions
E
C F H P Y
ACTUATOR SIZE 1051 1052
mm Inches mm Inches mm Inches mm Inches mm Inches mm Inches mm Inches
20 251 9.88 --- --- 256 10.06 18 0.69 76 3.00 52 2.06 59 2.32
33 289 11.38 338 13.31 338 13.31 33 1.31 116 4.56 92 3.62 65 2.56
40 333 13.12 505 19.88 607 23.88 54 2.12 114 4.50 175 6.88 73 2.88
60 473 18.62 749 29.50 876 34.50 64 2.50 121 4.75 186 7.31 76 3.00
70 536 21.12 --- --- 849 33.44 64 2.50 121 4.75 186 7.31 76 3.00
Table 7. Actuator / Valve Body Mounting Dimensions

VALVE SHAFT DIAMETER FIGURE T U V W
mm Inches REFERENCE mm Inches mm Inches mm Inches mm Inches
Style F Mounting: Vee-Ball, 8532, 8510B and 8560 Eccentric Disc Valves
12.7 - 15.9 1/2 - 5/8 A 117 4.62 --- --- 137 5.38 14.2 0.56
19.1 - 25.4 3/4 - 1 B 152 6.00 32 1.25 160 6.31 14.2 0.56
31.8 - 38.1 1-1/4 - 1-1/2 B 235 9.25 46 1.81 148 5.81 17.5 0.69
44.5 - 50.8 1-3/4 - 2 B 273 10.75 51 2.00 286 11.25 20.6 0.81
Style G Mounting: 9500 Series Valves
12.7 1/2 A 117 4.62 --- --- 137 5.38 11.0 0.44
15.9 - 25.4 5/8 - 1 B 146 5.75 32 1.25 160 6.31 11.0 0.44
31.8 - 38.1 1-1/4 - 1-1/2 B 210 8.25 51 2.00 148 5.81 17.5 0.69
44.5 - 50.8 1-3/4 - 2 B 241 9.50 70 2.75 286 11.25 20.6 0.81
Table 8. Dimensions for Top-Mounted Handwheel

ACTUATOR HC JC
SIZE mm Inches mm Inches
20 184 7.25 171 6.75
33 190 7.50 222 8.75
40 281 11.06 356 14.00
60 333 13.12 356 14.00
70 378 14.88 356 14.00
11
Product Bulletin
61.1:1051 1051 and 1052 Actuators
Neither Emerson, Emerson Process Management, nor any of their affiliated entities assumes responsibility for the selection, use or maintenance
of any product. Responsibility for proper selection, use, and maintenance of any product remains solely with the purchaser and end user.
Fisher, FIELDVUE, Vee-Ball, GO, and TopWorx are marks owned by one of the companies in the Emerson Process Management business unit of Emerson
Electric Co. Emerson Process Management, Emerson, and the Emerson logo are trademarks and service marks of Emerson Electric Co. All other marks are
the property of their respective owners.
The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not
to be construed as warranties or guarantees, express or implied, regarding the products or services described herein or their use or applicability. All sales are
governed by our terms and conditions, which are available upon request. We reserve the right to modify or improve the designs or specifications of such
products at any time without notice.
Emerson Process Management
Marshalltown, Iowa 50158 USA
Sorocaba, 18087 Brazil
Chatham, Kent ME4 4QZ UK
Dubai, United Arab Emirates
Singapore 128461 Singapore
www.Fisher.com
121983, 2013 Fisher Controls International LLC. All rights reserved.

E
Instruction Manual 1051 and 1052 F & G Actuators
D100319X012 October 2012
Fisherr 1051 and 1052 Style F and G

Size 40, 60, and 70 Rotary Actuators
Contents Figure 1. Fisher Vee-Ball™ Valve with 1052 Actuator
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 and FIELDVUE™ DVC6200 Digital Valve Controller
Scope of Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Educational Services . . . . . . . . . . . . . . . . . . . . . . . . . 3
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Actuator Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Valve Flow Direction . . . . . . . . . . . . . . . . . . . . . . . . . 8
Loading Connection . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Turnbuckle Adjustment . . . . . . . . . . . . . . . . . . . . . . . 8
1052 Spring Adjustment . . . . . . . . . . . . . . . . . . . . . . 9
Initial Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Stroking Range . . . . . . . . . . . . . . . . . . . . . . . . . 10
Principle of Operation . . . . . . . . . . . . . . . . . . . . . . . 10
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Changing Actuator Mounting . . . . . . . . . . . . . . . . . 16
Top-Mounted Handwheels and
Adjustable Travel Stops . . . . . . . . . . . . . . . . . . . . . . . 17
Principle of Operation for Handwheels . . . . . . . . . 17
Handwheel Maintenance and Adjustable
Travel Stop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Locking Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . 20 W8502-3
Installing the Locking Mechanism . . . . . . . . . . . . . 20

Operating the Locking Mechanism . . . . . . . . . . . . 21
Pipe-Away Vent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Parts Ordering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Parts Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Introduction
Scope of Manual
This instruction manual includes installation, adjustment, maintenance, and parts ordering information for the Fisher
1051 (size 40 and 60) and 1052 (Size 40, 60, and 70) pneumatic piston rotary actuator with F and G mounting
adaptations (see figure 1).
www.Fisher.com
1051 and 1052 F & G Actuators Instruction Manual
October 2012 D100319X012
Table 1. 1051 and 1052 Actuator Specifications
Operation Size 70: J 31.8 (1-1/4), J 38.1 (1-1/2), J 44.5

(1-3/4), or J 50.8 (2)
Direct Acting: Increasing loading pressure extends
the diaphragm rod out of the spring barrel
Service: Stroking Time
1051: For on-off or throttling service with positioner Dependent on actuator size, rotation, spring rate,
1052: For on-off or throttling service with or without a initial spring compression, and supply pressure. If
positioner stroking time is critical, consult your Emerson Process
Management sales office
Actuator Sizes
Material Temperature Capabilities(2)
1051: J 40 and J 60
1052: J 40, J 60, and J 70 NBR (Nitrile) Diaphragm: -40 to 82_C (-40 to 180_F)
VMQ (Silicone) Diaphragm: -40 to 149_C (-40 to
300_F)
Maximum Diaphragm Sizing Pressure(1) NBR O-Rings: -40 to 82_C (-40 to 180_F), NBR O-rings
Size 40: 4.5 bar (65 psig) are used in optional top-mounted handwheel,
Size 60: 2.8 bar (40 psig) adjustable down travel stop, and adjustable up travel
Size 70: 3.8 bar (55 psig) stop assemblies
Travel Indication
Maximum Diaphragm Casing Pressure(3)
Graduated disc and pointer combination located on
Size 40: 5.2 bar (75 psig) actuator end of valve shaft
Size 70: 4.5 bar (65 psig) Pressure Connections
Standard: 1/4 NPT internal thread
Maximum Valve Shaft Rotation Optional: J 1/2 or J 3/4 NPT internal, and
90 degrees rotation (standard) travel stop, or 60 J 3/4 NPT internal thread for pipe-away vent
degrees (optional) travel stop for 1051 and 1052
actuators, or 75 degrees (optional) travel stop for Mounting Positions
1052 actuators See figure 3.
Valve Shaft Diameters, mm (Inches) Approximate Weights

Size 40: J 12.7 (1/2), J 15.9 (5/8), J 19.1 (3/4), See table 2.
J 22.2 (7/8), J 25.4 (1), or J 31.8, (1-1/4)
Size 60: J 19.1 (3/4), J 22.2 (7/8), J 25.4 (1), Additional Specifications
J 31.8 (1-1/4), J 38.1 (1-1/2), J 44.5 (1-3/4), or For casing pressure ranges and for material
J 50.8 (2) identification of the parts, see the Parts List
1. Use this value to determine the maximum torque output allowed.
2. The pressure/temperature limits in this manual and any applicable standard or code limitation for valve should not be exceeded.
3. This maximum casing pressure is not to be used for normal operating pressure. Its purpose is to allow for typical regulator supply settings and/or relief valve tolerances.
The G mounting adaptation is for 7600 and 9500 valves, and the F mounting adaptation is for all other eccentric disc
or Vee-Ball valves. Also, this instruction manual provides information for the optional top-mounted handwheel, up and
down travel stops, locking mechanism, and pipe-away vent.
Instructions for the control valve, positioner, accessories, and other sizes of actuators are covered in separate
instruction manuals.
Top-Mounted handwheels can be applied for infrequent service as a manual handwheel actuator. Also, an adjustable
up travel stop can be added to the actuator to limit its stroke in the upward direction, or an adjustable down travel
stop can be added to limit actuator stroke in the downward direction.
2
D100319X012 October 2012
Do not install, operate, or maintain a 1051 or 1052 actuator without being fully trained and qualified in valve, actuator,
and accessory installation, operation, and maintenance. To avoid personal injury or property damage, it is important
to carefully read, understand, and follow all the contents of this manual, including all safety cautions and warnings. If
you have any questions about these instructions, contact your Emerson Process Management sales office before
proceeding.
Figure 2. Typical 1052 Actuator Adjustable Spring Seat
SPRING
SPRING SEAT
SPRING ADJUSTER
W4742-1
Description
1051 and 1052 diaphragm rotary actuators are pneumatic spring-return actuators for use with rotary-shaft control
valves. The 1051 actuator can be used for on-off service, or it can be used for throttling service when equipped with a
valve positioner. The 1052 actuator can be used for on-off service, or it can be used for throttling service when
equipped with or without a valve positioner. The 1052 actuator spring is adjustable (see figure 2).
Table 2. Approximate Actuator Weights

1051 1052 TOP-MOUNTED HANDWHEEL
SIZE
Kg Lb Kg Lb Kg Lb
40 43 94 45 99 7.3 16
60 89 197 92 203 11 24
70 - - - - - - 123 272 21 47
Specifications
Specifications are shown in table 1. Specifications for actuator operation, as it originally comes from the factory, are
stamped on the nameplate attached to the actuator.
Educational Services
For information on available courses for Fisher 1051 and 1052 Style F and G size 40, 60, and 70 rotary actuators, as well
as a variety of other products, contact:

Educational Services, Registration
P.O. Box 190; 301 S. 1st Ave.
Marshalltown, IA 50158-2823
Phone: 800-338-8158 or
Phone: 641-754-3771
FAX: 641-754-3431
e-mail: education@emerson.com
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October 2012 D100319X012
Installation
When an actuator and valve body are shipped together, the actuator is normally mounted on the valve. Follow the
valve body instructions when installing the control valve in the pipeline, and then perform the procedures presented in
the Loading Connection section. If the actuator is shipped separately or if it is necessary to mount the actuator on the
valve, perform the procedures presented in the Actuator Mounting section. And, if the actuator requires a pipe-away
vent, or if a retrofit pipe-away kit needs to be installed, refer to the Pipe-Away Vent section.
WARNING
Always wear protective gloves, clothing, and eyewear when performing any installation operations. Be aware of pinching
parts during installation operations.
Check with your process or safety engineer for any additional measures that must be taken to protect against process
media.
If installing into an existing application, also refer to the WARNING at the beginning of the Maintenance section in this
instruction manual.
Table 3. Recommended Bolting Torques

ACTUATOR SIZE
DESCRIPTION, KEY
40 60 70
NUMBER
Size NSm lbfSft Size NSm lbfSft Size NSm lbfSft
Diaphragm Casing, 5 3/8-24 27 20 3/8-24 27 20 3/8-24 27 20
Casing to spring barrel, 7 3/8-16 41 30 3/8-16 41 30 1/2-13 102 75
Diaphragm to rod, 9
1/2-13 34 25 3/4-10 102 75 --- 102 75
(1051)
Diaphragm to rod, 9
1/2-20 34 25 3/4-16 102 75 3/4-16 102 75
(1052)
Rod end bearing, 16 1/2-20 34 25 5/8-18 61 45 3/4-16 102 75
Turnbuckle to lever, 18 1/2-13 81 60 5/8-11 163 120 3/4-10 271 200
Spring barrel to housing,
5/16-18 23 17 7/16-14 68 50 5/8-18 68 50
21
Housing to yoke, 23 3/8-16 34 25 1/2-13 81 60 1/2-13 81 60
Travel stop to lever, 28 1/2-13 81 60 5/8-11 163 120 3/4-10 271 200
Side of housing, 34
3/8-16 34 25 1/2-13 81 60 1/2-13 81 60
4200/PMV
Handwheel top, 54 1/2-20 34 25 5/8-18 34 25 --- 34 25
Diaphragm head to
rod/Adjustable down 1/2-13 27 20 3/4-10 66 49 --- 69 51
travel stop, 54 (1051)
Diaphragm head to
rod/Adjustable down 1/2-20 27 20 3/4-16 66 49 3/4-16 69 51
travel stop, 54 (1052)
Rod end to turnbuckle, 58 3/4-16-LH 102 75 7/8-14-LH 163 120 7/8-14-LH 163 120
Handwheel to actuator,
3/8-16 41 30 3/8-16 41 30 1/2-13 81 60
141
CAUTION
To avoid parts damage, do not use an operating pressure that exceeds the Maximum Diaphragm Casing Pressure (table 1)
or produces a torque greater than the Maximum Allowable Valve Shaft Torque (see Catalog 14). Use pressure-limiting or
pressure-relieving devices to prevent the diaphragm casing pressure from exceeding its limit.
To avoid parts damage, do not stroke the actuator while cover (key 33) is off.
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D100319X012 October 2012
Actuator Mounting
Use the following steps to connect a valve and an actuator. Key numbers are shown in figure 8 for 1051 actuators and
in figure 9 for 1052 actuators.
WARNING
To avoid personal injury, perform the steps in the WARNING at the beginning of the Maintenance section to isolate the
control valve and actuator.
1. Unscrew cap screws and washers (keys 34 and 63), and remove the cover (key 33).
2. Refer to figure 3 for available mounting styles and positions. When mounting on a Vee-Ball V150, V200 or V300
valve, check the valve manual to determine if it is Series B. The actuator is normally positioned vertically with the
valve in a horizontal pipeline (see figure 3).
VALVE SERIES OR DESIGN VALVE SERIES OR DESIGN
MOUNTING ACTION(1) BALL/PLUG DISC/BALL 8510B, 8532,

CV500
ROTATION TO V250 V150, V200 & V300 ROTATION TO V250 8560
V500
CLOSE CLOSE & 9500
PDTC CCW A A A CW NA B
Right-Hand
PDTO CCW B B B CW NA A
PDTC CCW NA D D CW C C
Left-Hand
PDTO CCW NA C C CW D D
Left-Hand PDTC CW NA C NA NA NA NA
(Optional)(2) PDTO CW NA D NA NA NA NA
1. PDTC–Push-down-to-close, and PDTO–Push-down-to-open.
2. A left hand ball will be required for the NPS 3 through 12 Series B and the NPS 14 to 20, with or without attenuator.
WARNING
To avoid personal injury or property damage, the 1052 size 70 actuator, due to its weight, must be externally supported if
mounted in the horizontal position.
3. When mounting the actuators, make sure that the bushing (key 67) and valve shaft are in-line so that the bushing
will slide onto the valve shaft without damage.
4. Mount the actuator on the valve body and secure it with the valve mounting screws. The torque for 1/2 to 1-inch
shafts is 88 NSm (65 lbfSft); for 1-1/4 to 1-1/2 inch shafts is 136 NSm (100 lbfSft); for 1-3/4 to 2-inch shafts is 183
NSm (135 lbfSft).
CAUTION
Exceeding any torque requirement may impair the safe operation of this actuator by causing broken or damaged parts.
Refer to table 3 for the bolting torque requirements.
5. Screw the left-hand threaded locknut (key 58) onto the diaphragm rod (key 10) as far as possible.
6. Screw the turnbuckle (key 57) as far as it will go onto the actuator rod.
7. Screw the locknut (key 16) as far as it will go onto the rod end bearing (key 17). Thread this assembly completely
into the turnbuckle (key 57).
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October 2012 D100319X012
Figure 3. Mounting Styles and Positions for the 1051 and 1052 Actuator
STYLE A STYLE B
POSITION 1 1 POSITION 1 1
STYLE D
FLOW
STYLE C
2 4
LEFT-HAND
MOUNTING 4 2
3 3
RIGHT-HAND MOUNTING
STYLE D STYLE C
STYLE B
STYLE A POSITION 1 1 POSITION 1 1
FLOW
2 4
4 2
3 3
RIGHT-HAND
43A6505-A
A1584-3 MOUNTING LEFT-HAND MOUNTING
NOTES:
1 POSITION 1 IS STANDARD; POSITIONS 2 THROUGH 4
(SHOWN IN DOTTED LINES) ARE ALTERNATIVES.
8. If the lever (key 27) is attached to the rod end bearing, remove the cap screw and hex nut (keys 18 and 19).
9. If the 1052 spring adjustment has been changed, complete the Initial Setting portion of the 1052 Spring
Adjustment section before proceeding.
10. Consult the appropriate valve instruction manual's Installation section for lever/valve shaft orientation marks, and
slide the lever into place (see figure 4). Clamp with the cap screw (key 28).
11. Rotate the lever (key 27) to align with the rod end bearing (key 17). This connection can be aided by moving the
actuator off its up travel stop with a regulated air source and adjusting the turnbuckle (key 57) slightly.
12. Apply sealant (key 77) or equivalent thread-locking compound to the threads of the cap screw (key 18).
13. Connect the lever (key 27) and the rod end bearing (key 17) with the cap screw and hex nut (keys 18 and 19).
Tighten the cap screw to the recommended bolt torque shown in table 3.
14. Note the valve position and direction of rotation. Position the travel indicator (key 37) accordingly.
a. If no handwheel actuator is to be used, position the travel indicator (key 37) according to the valve position just
noted. Replace the cover (key 33), and secure with washers and cap screws (keys 34 and 63). If holes in the cover
and housing (key 20) do not align, temporarily loosen the cap screws (key 23), and shift the housing slightly.
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D100319X012 October 2012
CAUTION
To avoid parts damage, do not stroke the actuator while the cover (key 33) is off.
b. If a manual handwheel actuator is to be used, refer to the separate handwheel actuator instruction manual for
mounting instructions.
15. Replace the cover (key 33), and secure with cap screws and washers (keys 34 and 63). If the holes in the cover and
housing (key 20) do not align, use a regulated air source to move the actuator slightly off the up travel stop. If the
hole alignment cannot be obtained in this manner, temporarily loosen the cap screws (key 23), and shift the
housing slightly.
Figure 4. Lever Operating Clearance
34.9
(1.375)
OPERATING CLEARANCE 1.6

(0.0625)
mm
(INCH)
13A6773-A
A1739-4
CAUTION
To avoid parts damage, do not stroke the actuator while the cover (key 33) is off.
16. Follow the instructions given in the Turnbuckle Adjustment section before proceeding to the Loading Connection
section.
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October 2012 D100319X012
Valve Flow Direction

Valve construction can change the flow direction for a control valve assembly. It is important to observe the flow
direction in all valve applications before installing the valve in the pipeline (see figure 3). Refer to the appropriate valve
bulletin or instruction manual.
Note
Observe all warnings and cautions provided in the appropriate valve instruction manual Installation section.
Loading Connection
1. Connect the loading pressure piping to the pressure connection in the top of the diaphragm casing.
a. For size 40 through 60 actuators: Run either 1/4 NPT pipe or 3/8 inch tubing between the 1/4 NPT pressure
connection and the instrument.
b. For size 70 actuators: Run either pipe or tubing between the pressure connection and the instrument. If
necessary, remove the 1/4 inch bushing in the pressure connection to increase connection size.
2. Keep the length of pipe or tubing as short as possible to avoid transmission lag in the control signal. If an accessory
(such as a volume booster or a valve positioner) is used, be sure that the accessory is properly connected to the
actuator. If a valve positioner is part of the assembly, the pressure connection to the actuator will normally be made
at the factory.
Table 4. Wrench Size Required for Turnbuckle Adjustment, Inches

ACTUATOR TURNBUCKLE
LOWER LOCKNUT (KEY 16) UPPER LOCKNUT (KEY 58)
Type Size (KEY 57)
40 1-1/8 3/4 1-1/8
1051 & 1052
60 1-5/16 15/16 1-5/16
1052 70 1-5/16 1-1/8 1-5/16
3. When the control valve is completely installed and connected to the instrument, check for correct action
(air-to-open or air-to-close) to match the controlling instrument. For successful operation, the actuator stem and
valve shaft must move freely in response to the loading pressure change on the diaphragm.
Adjustment
Turnbuckle Adjustment
Correct turnbuckle adjustment ensures that the valve is correctly closed when the actuator is against its travel stops.
The turnbuckle adjustment is the only adjustment necessary on the 1051 actuator. Key numbers are shown in figure 8
for 1051 actuators and in figure 9 for 1052 actuators.
For accurate adjustment to the zero-degree valve disc or ball position, remove the valve from the pipeline. Refer to the
valve instruction manual for instructions.
A regulated air supply will be required to stroke the actuator. Refer to table 4 for the sizes of the three open-end
wrenches required for this procedure.
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D100319X012 October 2012
1. Remove the access plate (key 59). Also remove the machine screws (key 60), if present.
Note
For the most accurate adjustment of the actuator, do not remove the cover (key 33) during this procedure.
2. Loosen the lower locknut (key 16).

3. Make sure the actuator housing (key 20) is clear of any tools or other instruments that could obstruct the actuator
stroke path. Pressure the diaphragm casing enough to stroke the actuator down so that the left-hand threaded
upper locknut (key 58) is accessible through the access opening. Loosen the locknut.
4. Consult the appropriate valve instruction manual for determining the closed position of the valve. Then use one of
the following:
a. Push-down-to-close–Slowly stroke the actuator to the down travel stop. Adjust the turnbuckle (key 57) until the
valve is in the closed position. Lock this adjustment with the left-hand threaded locknut (key 58). Stroke the
actuator to the mid-travel position, and tighten the locknut (key 16).
b. Push-down-to-open–Release all pressure from the diaphragm casing, making sure the diaphragm is against its
up travel stop. Be sure that the optional handwheel is adjusted to its topmost position so that the zero position of
the actuator and valve can be reached simultaneously. Check the valve position. Stroke the actuator so the
turnbuckle (key 57) is accessible through the access opening. Adjust the linkage. Release pressure to the
actuator, and check the new adjustment. Continue this procedure until the valve is in the closed position when
the actuator is resting on its up travel stop. Stroke the actuator to the mid-travel position, and tighten the
locknut (key 16). Stroke the actuator, and tighten the left-hand threaded locknut (key 58).
5. Replace the access plate (key 59).
6. Loosen the self-tapping screws (key 38), adjust the travel indicator (key 37), and re-tighten the self-tapping screws.
1052 Spring Adjustment

Initial Setting
The 1052 nameplate specifies an initial spring setting, which is the initial setting adjusted into the actuator spring.
Initial setting is the casing pressure at which the diaphragm and diaphragm rod begin to move away from the up travel
stop with the actuator disconnected from the valve. (With the actuator connected to the valve and pressure applied to
the valve, a higher pressure will be required to start actuator travel).
The initial setting was selected (based upon the service conditions specified when the actuator was ordered) so that,
when the actuator and valve are in service, the valve will seat properly and full travel will be obtained within a
diaphragm casing range of 0 to 1.2, 0 to 2.3, 0 to 2.8, or 0 to 3.8 bar (0 to 18, 0 to 33, 0 to 40, or 0 to 55 psig)
depending on specific actuator size and construction.
If the actuator has been disassembled or if the spring adjustment was changed, and it is desired to match the initial
setting stated on the nameplate, make sure the rod end bearing (key 17, figure 8 or 9) has been disconnected from the
lever (key 27, figure 8 or 9). Adjust the spring so that the diaphragm rod just starts to travel at the spring set pressure
specified on the nameplate.
Be sure the rod end bearing does not hit the lever as the diaphragm and diaphragm rod move away from the up travel
stop. To adjust the spring, insert a round rod into one of the holes in the lower bearing seat (key 73, figure 9). Hole
diameter is 9.5 mm (3/8 inch) for size 40 actuators, 15.9 mm (5/8 inch) for size 60 actuators, and 19.1 mm (3/4 inch)
for size 70 actuators. Rotate the bearing seat to move it toward the casing to increase initial setting or away from the
casing to decrease initial setting (keys 1 and 2, figure 9).
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October 2012 D100319X012
Stroking Range
The initial spring setting listed on the nameplate has been determined to be the optimum setting, and it is not
recommended to make spring adjustments that will cause this value to change or be exceeded. For
push-down-to-open valve action, the initial spring setting is the maximum allowable to provide the maximum spring
closing force.
CAUTION
Any increase of this setting will over-stress the spring at full travel and may shorten the fatigue life of the spring.
For push-down-to-close valve action, the initial spring set has been determined to be the optimum balance between
the air-to-close and the spring-to-open breakout torque.
If the 1052 actuator is to be changed from one valve action to another (i.e., push-down-to-close to
push-down-to-open), first, refer to the table for key 11 in the Parts List section to determine the proper initial spring
setting; then, adjust the unit according to the procedures in the Initial Settings portion of the 1052 Spring Adjustment
section.
Principle of Operation
The diaphragm rod moves down as loading pressure is increased on top of the diaphragm. As the loading pressure is
decreased, the spring forces the diaphragm rod upward.
The spring and diaphragm have been selected to meet the requirements of the application and, in service, the
actuator should produce full travel of the valve with the diaphragm pressure as indicated on the nameplate.
Consult the separate positioner instruction manual for actuator principle of operation with positioner.
Maintenance
Actuator parts are subject to normal wear and must be inspected and replaced as necessary. The frequency of
inspection and replacement depends upon the severity of service conditions. Key numbers are shown in figure 8 for
1051 actuators and in figure 9 for 1052 actuators.
WARNING
Avoid personal injury or property damage from sudden release of process pressure or uncontrolled movement of parts.
Before performing any maintenance operations:
D Do not remove the actuator from the valve while the valve is still pressurized.
D Always wear protective gloves, clothing, and eyewear when performing any maintenance operations to avoid personal
injury. Be aware of pinching parts during maintenance operations.
D Disconnect any operating lines providing air pressure, electric power, or a control signal to the actuator. Be sure the
actuator cannot suddenly open or close the valve.
10
D100319X012 October 2012
D Use bypass valves or completely shut off the process to isolate the valve from process pressure. Relieve process pressure
from both sides of the valve. Drain the process media from both sides of the valve.
D Vent the power actuator loading pressure and relieve any actuator spring precompression.
D Use lock-out procedures to be sure that the above measures stay in effect while you work on the equipment.
D The valve packing box may contain process fluids that are pressurized, even when the valve has been removed from the
pipeline. Process fluids may spray out under pressure when removing the packing hardware or packing rings, or when
loosening the packing box pipe plug.
D Check with your process or safety engineer for any additional measures that must be taken to protect against process
media.
CAUTION
Disassembly
The following procedure describes how to completely disassemble the actuator. When inspecting and replacing parts,
perform only those steps necessary to accomplish the repair.
Do not, under ordinary circumstances, remove the cap screws (keys 7, 8, and 21) at this time.
CAUTION
Cap screw (key 18) must be disengaged from the lever (key 27) before removing the diaphragm casing (key 1). Failure to do
so will allow the spring precompression to rotate the valve beyond its fully open or closed position. This could cause
damage to the valve components and/or seal.
1. Perform the steps in the WARNING at the beginning of the Maintenance section to isolate the control valve and
actuator.
2. Remove the tubing or piping from the top of the actuator.
3. Remove the positioner, if used. If necessary, refer to the positioner instruction manual for removal instructions.
4. Unscrew the cap screws and washers (keys 34 and 63), and remove the cover (key 33).
5. Remove the retaining ring (key 30), and slide the hub (key 29) from the cover. If necessary, remove the travel
indicator (key 37) from the hub (key 29).
6. Inspect, and if necessary, replace the cover bushing (key 31). Remove the travel indicator scale (key 35) by
removing the self-tapping screws (key 36). Press the bushing out of the cover (key 33).
7. Remove the cap screw and hex nut (keys 18 and 19).
8. Make note of the lever/valve shaft orientation, and then loosen the cap screw (key 28).
CAUTION
When removing the actuator from the valve, do not use a hammer or similar tool to drive the lever (key 27) off the valve
shaft. Driving the lever could damage internal valve parts. On some valve types, driving the lever off the shaft could move
11
October 2012 D100319X012
the valve disc or ball and bearings away from the centered position, causing subsequent damage to valve parts as the valve
is operated.
A wheel puller may be used to remove the lever. It is okay to tap the wheel puller screw lightly to loosen the lever, but
hitting the screw with excessive force could also damage valve parts or disrupt the centered position of the valve disc and
bearings.
9. Rotate the handwheel (if one is used) counterclockwise until the handwheel is not compressing the spring (key 11).
WARNING
To avoid personal injury from pre-compressed spring force suddenly thrusting the upper diaphragm casing (key 1) away
from the actuator, relieve 1052 spring compression, or carefully remove 1051 casing cap screws before proceeding further.
10. To relieve spring compression:

a. For 1051 actuators:
D Loosen, but do not remove, all casing cap screws and hex nuts (keys 5 and 6). Make sure there is no spring force to
the upper diaphragm casing.
D Unscrew and remove the cap screws and hex nuts (keys 5 and 6), and then remove the upper diaphragm casing and
the diaphragm (key 3).
b. For 1052 actuators:
D Insert a round rod into one of the holes in the lower bearing seat (key 73). Use the rod to rotate the lower bearing
seat, and move it away from the actuator casings. Continue rotating the lower bearing seat until spring
compression is completely removed. Rod hole diameter is 9.5 mm (3/8 inch) for size 40 actuators, 15.9 mm (5/8
inch) for size 60 actuators, and 19.1 mm (3/4 inch) for size 70 actuators.
D Unscrew and remove the cap screws and hex nuts (keys 5 and 6), and then remove the upper diaphragm casing and
the diaphragm (key 3).
11. Removing the diaphragm plate (key 4):
a. For 1051 actuators:
D Pull the diaphragm plate (key 4) and attached parts out of the actuator. The spring (key 11), diaphragm rod (key
10), cap screw (key 9), spring seat (key 13), hex nut (key 58), turnbuckle (key 57), hex nut (key 16), and rod end
bearing (key 17) will be attached to the diaphragm head assembly.
D The diaphragm plate (key 4) may be wedged against the diaphragm rod (key 10), thereby preventing the spring
compression from being relieved as the cap screw (key 9) is loosened.
WARNING
Dislodge the diaphragm plate (key 4) from the diaphragm rod (key 10) before completely removing the cap screw (key 9).
Failure to comply with this requirement could cause personal injury due to the sudden release of spring compression.
D Dislodge the diaphragm plate (key 4) from the diaphragm rod (key 10) by loosening the cap screw (key 9) one full
turn and tapping the underside of the diaphragm plate until it follows the cap screw as it is being removed. Failure
12
D100319X012 October 2012
to check for this condition before completely removing the cap screw (key 9) could cause personal injury due to the
sudden release of spring compression.
D Slowly remove the cap screw (key 9) while making sure that the diaphragm head assembly is following the cap
screw disassembly. Note--Make sure that spring load is zero before the cap screw is completely removed. See the
WARNING on the preceding page. If necessary, separate the remaining parts of the assembly.
b. For 1052 actuators:
(1.) Remove the rod end bearing (key 17), the hex nut (key 16), turnbuckle (key 57), and the hex nut (key 58)
from the diaphragm rod (key 10).
(2.) Pull the diaphragm plate (key 4) and attached parts out of the actuator. Then remove the cap screw (key
9) to separate the diaphragm plate and the diaphragm rod.
(3.) Proceed as appropriate:
D For Size 40 and 60 actuators: Remove the actuator spring (key 11) from the actuator. If it is necessary to remove the
adjusting screw (key 74) from the spring barrel during this procedure, heat the base of the adjusting screw to 177_C
(350_F) long enough for the thread-locking compound (key 77) to lose its holding strength. Then, unscrew the
adjusting screw from the spring barrel. If the spring seat and the lower bearing seat (keys 13 and 73) are to be
replaced, unscrew the lower bearing seat from the adjusting screw, and then remove the thrust bearing and the
bearing races (keys 71 and 72) from the lower bearing seat.
D For Size 70 actuators: Remove the actuator spring (key 11) from the actuator. Remove the cap screws (key 21), then
remove the spring barrel (key 12) from the actuator housing. If it is necessary to remove the spring adjustment
parts, loosen the set screw (key 75), and unscrew the spring adjusting screw (key 74) from the spring barrel (key
12).
12. Unscrew the cap screws (key 23), and remove the actuator housing assembly (key 20).
13. Unbolt the mounting yoke (key 22) from the valve.
14. Check the bushing (key 67) in the mounting yoke. Press out and replace the bushing if necessary.
Assembly
This procedure assumes that the actuator was completely disassembled. If the actuator was not completely
disassembled, start these instructions at the appropriate step. This procedure also assumes that the valve is removed
from the pipeline for ease in actuator assembly and adjustment.
Key numbers are shown in figure 8 for 1051 actuators and in figure 9 for 1052 actuators.
1. Installing the spring barrel (key 12):
a. For 1051 actuators: Place the spring barrel onto the housing (key 2). Secure the spring barrel with cap screws (key
21). Tighten the cap screws to the torque value shown in table 3.
b. For 1052 actuators: If the spring barrel (key 12) was removed from the housing (key 20), align the spring barrel to
the housing as described below to ensure that the offset hole in the base of the spring barrel will be located
properly.
D For Size 40 and 60 actuators: Note that one of the accessory mounting bosses on the spring barrel is closer to the
diaphragm end of the spring barrel. Place the spring barrel onto the housing with the upper boss (the one closer to
the diaphragm end) on the same side as the boss located on the housing (see figures 8 and 9). This ensures proper
positioning of the offset hole. Secure the spring barrel with cap screws (key 21). On final assembly, tighten the
screws to the torque value shown in table 3.
13
October 2012 D100319X012
D For Size 70 actuators: The spring barrel need not be aligned in any particular position when placing it on the housing.
2. If the bushing (key 67) was removed, press in the new bushing. The end of the bushing should be flush with the
bottom of the recess in the mounting yoke (key 22).
3. Slide the mounting yoke over the valve shaft, and secure it to the valve with the valve mounting cap screws.
4. Tighten the valve mounting cap screws to the bolting torque listed in step 6 of the Installation procedures.
WARNING
Exceeding any torque requirement may impair the safe operation of the actuator and lead to possible personal injury or
property damage.
5. Refer to figure 4 for the desired orientation of the housing (key 20). Secure the housing to the mounting yoke with
cap screws (key 23).
6. Coat with lithium grease (key 93) on the cap screw threads (key 9), and the tapered end of the diaphragm rod (key
10).
7. Proceed as appropriate:
a. For 1051 actuators (see figure 8)
D Assemble the diaphragm rod, spring seat (key 13), spring (key 11), and diaphragm plate (key 4), and secure with the
cap screw (key 9). Tightening the cap screw will compress the spring. Be certain the tapered end of the diaphragm
rod is seated in the corresponding hole in the diaphragm plate, that the spring is seated in the spring seat, and that
the cap screw is tightened to the torque specified in table 3.
D Install the hex nut (key 58), turnbuckle (key 57), hex nut (key 16), and rod end bearing (key 17) onto the diaphragm
rod.
D Be certain the travel stops (key 8) are located as shown in figure 5.
D Install the diaphragm plate and attached parts into the actuator.
D Be sure the warning nameplate (key 56) is in place. Install the diaphragm (key 3) and the upper diaphragm casing
(key 1). Install the cap screws and hex nuts (keys 5 and 6). Tighten the cap screws evenly in a crisscross pattern to
compress the spring and secure the upper diaphragm casing. Refer to table 3 for torque values.
b. For 1052 actuators (see figure 9):

D For actuator designs without a set screw (key 75) in the spring barrel (key 12): if the adjusting screw and attached parts
were removed, first clean and then lubricate the upper threads of the adjusting screw (key 74) with lithium grease
(key 76) as shown in figure 9. Install the lower bearing seat (key 73), the thrust bearing (key 71), the thrust bearing
races (key 72), and the spring seat (key 13) onto the adjusting screw.
D First, clean and then coat the lower end of the adjusting screw with sealant (key 77) or equivalent thread-locking
compound as shown in figure 9, and install the entire assembly into the spring barrel (key 12). Let the adjusting
screw stand undisturbed for at least two hours after installation to allow the thread-locking compound to cure.
CAUTION
Apply lubricant to the upper threads and thread-locking compound to the lower threads of the adjusting screw. Do not
overlap the coat of lubricant with the coat of thread-locking compound since this will adversely affect the performance
quality of both substances.
14
D100319X012 October 2012
D For actuator designs with a set screw (key 75), if the adjusting screw (key 74) and attached parts were removed,
lubricate the threads of the adjusting screw with lithium grease (key 76). Install the lower bearing seat (key 73), the
thrust bearing (key 71), the thrust bearing races (key 72), and the spring seat (key 13) onto the adjusting screw.
Install this assembly into the spring barrel (key 12). Secure the adjusting screw with the set screw (key 75).
8. Coat the tapered end of the diaphragm rod (key 10) and the threads of the cap screw (key 9) with lithium grease
(key 76). Bolt the diaphragm plate to the diaphragm rod.
9. Be certain the travel stops (key 8) are located as shown in figure 5.
10. Install the spring (key 11) into the spring barrel. Install the diaphragm plate and diaphragm rod into the actuator.
Attach the hex nut (key 58), turnbuckle (key 57), hex nut (key 16), and rod end bearing (key 17) to the diaphragm
rod.
11. Installing the diaphragm:
D Install the diaphragm (key 3) and place the upper diaphragm casing (key 1) onto the lower diaphragm casing (key
2). If necessary, rotate the lower bearing seat (key 73) so that the upper diaphragm casing travel stop will not
contact the diaphragm when the casing cap screws and nuts (key 5 and 6) are tightened.
D Secure the upper diaphragm casing with the cap screws and hex nuts (keys 5 and 6). Be sure the warning nameplate
is in place on the casing. Tighten the nuts on the cap screws to the torque value shown in table 3.
Figure 5. Travel Stop Orientation
8 7 8 7
7 39 7 7
39
7 7 7
8 7 7 8
A2534-1 SIZE 40 SIZE 60 AND 70
12. For 1052 actuators, complete the Initial Setting portion of the 1052 Spring Adjustment section before proceeding.
13. Refer to the appropriate valve instruction manual for lever/valve shaft orientation marks, and slide the lever (key
27) into place; see figure 4 for correct lever operating clearance. Clamp with the cap screw (key 28, figure 9).
14. Rotate the lever (key 27) to align with the rod end bearing (key 17). This connection can be aided by carefully
stroking the actuator off its up travel stop with a regulated air source.
Tighten the nut on the cap screw (see table 3).
17. Coat the bearing surfaces of the hub (key 29), and cover (key 33) with lithium grease (key 76). Install the bushing
(key 31) and hub into the cover. Secure with the retaining ring (key 30).
18. Install the travel indicator scale (key 35), and secure it with the self-tapping screws (key 36). Then install the travel
indicator (key 37), and secure it with the self-tapping screws (key 38).
19. Note the valve disc or ball position, and direction of rotation. Position the travel indicator (key 37) accordingly.
20. Replace the cover (key 33), and secure with cap screws and washers (keys 34 and 63). If the holes in the cover and
housing (key 20) do not align, use a regulated air source to move the actuator slightly off the up travel stop. If hole
15
October 2012 D100319X012
alignment cannot be obtained in this manner, temporarily loosen cap screws (key 23), and shift the housing
slightly.
CAUTION
21. If a valve positioner is to be used, consult the separate valve positioner instruction manual for proper positioner
installation.
22. Follow the instructions in the Turnbuckle Adjustment section.
Changing Actuator Mounting

The actuator is normally positioned vertically in a horizontal pipeline. However, four mounting styles and four
positions for each style are possible (see figure 3).
Note
Due to its weight, the 1052, size 70 actuator must be externally supported if mounted in the horizontal position.
Correct lever/valve shaft positioning is important to ensure proper valve action. Consult the appropriate valve
instruction manual.
Style A is right-hand mounted, while style D is left-hand mounted. In all other ways, the styles A and D are identical.
Style B is right-hand mounted, while style C is left-hand mounted. In all other ways, the styles B and C are identical.
Use the following procedure along with figures 8 and 9, for key number references, to convert from styles A and D to
styles B and C or vice versa or to change the mounting position.
WARNING
1. Remove the tubing or piping from the top of the actuator.

2. Remove the cover (key 33) by unscrewing and removing the cap screws and washers (keys 34 and 63).
3. Unscrew cap screw (key 18). Loosen cap screw (key 28).
CAUTION
When removing the actuator from the valve body, do not use a hammer or similar tool to drive the lever (key 27) or
actuator off the valve shaft. Driving the lever or actuator could damage internal valve parts. On some valve types, driving
16
D100319X012 October 2012
the lever (key 27) could move the valve disc and bearings away from the centered position causing subsequent damage to
valve parts.
A wheel puller may be used to remove the lever. It is okay to tap the wheel puller screw lightly to loosen the lever, but
hitting the screw with excessive force could also damage valve parts or disrupt the centered position of the valve disc and
bearings.
4. If changing styles,
D Unscrew cap screws (key 23), and remove the actuator housing (key 20) from the mounting yoke (key 22).
D Rotate the housing 180 degrees, maintaining the appropriate position (1, 2, 3, or 4), and place the actuator onto
the mounting yoke (key 22).
5. If changing positions, unscrew cap screws (key 23), and rotate the actuator housing to the desired position.
6. Secure actuator housing (key 20) to the mounting yoke (key 22) with cap screws (key 23). Consult table 3 for
appropriate bolt torques.
7. Consult the appropriate valve instruction manual for lever/valve shaft orientation marks, and slide the lever (key 27)
into place; see figure 4 for correct lever operating clearance. Clamp with the cap screw (key 28).
8. Rotate the lever (key 27) to align with the rod end bearing (key 17). This connection can be aided by stroking the
actuator off its up travel stop with a regulated air source.
Tighten cap screw to the recommended bolt torque shown in table 3. This connection can be aided by stroking the
actuator from its up travel stop with a regulated air source.
11. Note the valve position and direction of rotation. Position the travel indicator (key 37) accordingly. Replace the
cover (key 33), and secure it with cap screws and washers (keys 34 and 63).
D If the holes in the cover and housing (key 20) do not align, use a regulated air source to move the actuator slightly
off the up travel stop.
D If hole alignment cannot be obtained in this manner, temporarily loosen cap screws (key 23) and shift the housing
slightly.
CAUTION
12. Follow the instructions given in the Turnbuckle Adjustment section.
Top-Mounted Handwheels and Adjustable Travel Stops

Principle of Operation for Handwheels
Note
If repeated or daily manual operation is expected or desired, the unit should be equipped with a manual handwheel actuator. Refer
to the separate manual handwheel actuator instruction manual for mounting instructions.
17
October 2012 D100319X012
Top-Mounted Handwheel Assembly is attached to a special upper diaphragm casing (key 1, figures 8 and 9) with cap
screws (key 141, figure 10). A hex nut (key 137, figure 11) locks the handwheel in position. Turning the handwheel
(key 51, figure 10) clockwise into the upper diaphragm casing forces the pusher (key 135, figure 10) against the
diaphragm and diaphragm plate (keys 3 and 4, figures 8 and 9) to compress the spring (key 11, figures 8 and 9) and
move the diaphragm rod downward.
Turning the handwheel counterclockwise allows the actuator spring to move the diaphragm rod upward.
D If the valve is push-down-to-close, full opening can be restricted by positioning the handwheel at the desired
position.
D If the valve is push-down-to-open, full closing of the valve can be restricted by use of the handwheel.
Adjustable Up Travel Stop (figure 11) limits the actuator stroke in the upward direction. To make adjustments, first
relieve actuator loading pressure before removing the closing cap (key 187) as it is a pressure retaining part. Remove
the closing cap (key 187). Also, for size 70 actuators, the hex nut (key 137) must be loosened. Then turn the stem (key
133) clockwise into the diaphragm case to move the actuator stem downward or counterclockwise to allow the spring
to move the actuator stem upward.
D If the valve has push-down-to-close action, full opening can be restricted by the position of the adjustable travel
stop. Or,
D If the valve has push-down-to-open action, full closing can be restricted by the position of the adjustable travel stop.
For size 70, tighten the hex nut and replace the closing cap after adjustment.
Adjustable Down Travel Stop (figure 12) limits the actuator stroke in the downward direction. To make adjustments,
first relieve actuator loading pressure before removing the closing cap (key 187) as it is a pressure retaining part.
Remove the closing cap (key 187). Loosen the hex jam nut (key 189) and either turn the hex nut (key 63 for size 40 and
70 actuators; or key 54 for size 60 actuators) down on the stem (key 133) to limit travel, or up on the stem to allow
more travel. Lock the jam nut against the hex nut, and replace the closing cap after the adjustment has been made.
Handwheel Maintenance and Adjustable Travel Stop

If loading pressure seems to be leaking from either the handwheel or adjustable up stop, the O-rings (key 138 and 139,
figures 10 and 11) may need replacement. If the adjustable down stop leaks, the O-ring (key 139, figure 12) may need
replacement or possibly the closing cap (key 187, figure 11) is not tight. To tighten the closing cap, apply a good grade
of thread sealant to the closing cap threads.
For ease of operation, the stem threads (key 133, figures 10, 11, and 12) may need an occasional application of lithium
grease (key 241). A grease fitting (key 169, figures 10 and 11) is provided for this purpose in the size 70. The size 70
may also need to have the thrust bearing (key 175, figures 10 and 11) packed with lithium grease (key 241). Travel
stops for the smaller casings can be lubricated between the stem and pusher (key 135, figures 10 and 11) with lithium
grease (key 241).
The following disassembly procedures are separated where appropriate between the top-mounted handwheel and
adjustable up travel stop assemblies (figures 10 and 11) and the adjustable down travel stop assembly (figure 12).
WARNING
18
D100319X012 October 2012
1. Remove the tubing or pipe from the handwheel body (key 142, figures 10, 11, and 12).
WARNING
To avoid personal injury from the pre-compressed spring force thrusting the upper diaphragm casing (key 1, figures 8 and
9) away from the actuator, either relieve 1052 spring compression, or carefully remove 1051 casing cap screws by
following the instructions that are referenced in the steps below before removing the casing.
2. Relieve all actuator spring compression by following the procedures presented in the Disassembly portion of the
Maintenance section. Then, rotate either the handwheel (key 51, figure 10) or the travel stop stem (key 133, figures
11 and 12) counterclockwise until the handwheel or travel stop assembly is no longer compressing the spring.
CAUTION
For 1051 actuators with eccentric disc valves and push-down-to-open action, the cap screw (key 18, figure 8) should be
disengaged from the lever (key 27, figure 9) before removing the diaphragm casing (key 1, figure 8) as specified in the
following steps. Failure to do so will allow the spring precompression to rotate the valve beyond its closed position. This
could cause damage to the valve seal, seat, or other valve components.
3. Proceed as appropriate:
For Adjustable Up Travel Stops:
a. Remove the upper diaphragm casing (key 1, figures 8 and 9) by following steps 1, 3, 7, 9, 10, and 11 of the
Disassembly portion of the Maintenance section.
b. Remove the cap screws (key 141, figures 10 and 11), and separate the assembly from the upper casing.
c. Loosen the locknut (key 137, figure 10), or remove the closing cap (key 187, figure 11).
d. Turn the stem (key 133, figures 10 and 11) clockwise out of the valve body. On handwheel assemblies, the cotter
pin and hex nut (keys 247 and 54, figure 10) will have to be removed so that the handwheel (key 51, figure 10)
and locknut can be taken off the stem first.
e. Remove and inspect the O-rings (keys 138 and 139, figures 10 and 11); replace them if necessary.
f. To complete disassembly:
For sizes 40 and 60: Drive out the groove pin (key 140, figures 10 and 11), and slide the pusher (key 135, figures
10 and 11) off the stem.
For size 70: The pusher unit is held to the stem by a retaining screw (key 174, figures 10, 11 or 12). Removing the
retaining screw and pusher exposes the thrust bearing (key 175, figures 10 and 11) for inspection.
For Adjustable Down Travel Stops:
Key numbers are shown in figure 12 unless otherwise noted. For ease of operation, the stem (key 133) threads may
need an occasional application of lubricant.
a. Remove the closing cap (key 187), and unscrew the jam nut and hex nut (keys 189 and 63 for size 40 and 70
actuators; or keys 189 and 43 for size 60 actuators) off the stem (key 133).
b. Remove the upper diaphragm casing (key 1, figures 8 and 9) and travel stop body (key 142) by following steps 1,
3, 7, 9, 10, and 11 of the Disassembly portion of the Actuator Maintenance section.
19
October 2012 D100319X012
c. Unscrew cap screws (key 141), and remove the body from the diaphragm case.
d. Check the condition of the O-ring (key 139), and replace it if necessary.
e. Loosen the hex nut (key 54), and then unscrew the travel stop stem (key 133) out of the actuator stem. The
lower diaphragm plate (key 82) can now be removed and the rest of the actuator disassembled.
4. Reassemble by reversing the order of the disassembly steps, being sure to apply lubricant as previously mentioned
and as shown by the lubrication boxes (key 241) in figures 10 and 11. For size 70 handwheels or up travel stop
assemblies, coat the threads of the retaining screws (key 174, figures 10 and 11) with sealant (key 242) or
equivalent thread-locking compound.
Figure 6. Actuator Locking Mechanism

LEVER
MODIFIED
HOUSING
(KEY 20)
LEVER
CAP SCREW
GROOVE PIN
(KEY 127)
PADLOCK
(CUSTOMER
SUPPLIED)
CAP SCREW (1 REQ'D) (KEY 129)

JAM NUT (KEY 128)
MOUNTING PLATE ASSY

34B0458-A LOWER (KEY 124)
A6808
LOCKING DISC
5. Readjust the spring to obtain the appropriate travel stop restriction by following the steps in the Top Mounted
Handwheel Assembly section, and then return the unit to operation.
Locking Mechanism
Refer to figure 6 when installing, operating, and locking the mechanism. Key numbers are shown in figure 6 unless
otherwise noted.
Installing the Locking Mechanism

WARNING
20
D100319X012 October 2012
1. To add the locking mechanism to an existing actuator, contact your Emerson Process Management sales office to
purchase the required parts. The required parts are the locking mechanism and a modified actuator housing.
2. To remove the old housing, use the Disassembly procedures in the Maintenance section.
3. Attach the mounting plate (key 123) to the modified housing (key 20) as shown in figure 6. Attach it with the cap
screw (key 129). Make sure the hole in the center of the mounting plate lines up with the large tapped hole in the
housing.
4. Make sure the jam nut (key 128) is threaded onto the threaded bolt before threading it into the housing.
5. After the bolt is threaded into the housing, install the groove pin (key 127) into the end of the bolt. (Note: The
groove pin will prevent the threaded bolt from being totally unthreaded from the actuator housing.)
6. Make sure that the bolt is not threaded in so far that it will interfere with reassembly of the actuator.
7. Reassemble actuator using the Assembly procedure in the Maintenance section.
8. Make sure the actuator diaphragm rod is retracted fully. This will be the locked position of the valve. For a
push-down-to-close valve and actuator, the valve will be fully open when locked. For a push-down-to-open valve
and actuator, the valve will be fully closed when locked.
9. Screw the threaded bolt into the housing until it contacts the head on the lever cap screw (see figure 6).
10. Insert the padlock (customer supplied) to connect the mounting plate (key 123) with the lower locking disc on the
mounting plate assembly (key 124). You might have to back off the lower locking disc a slight amount to line up the
holes for the padlock.
CAUTION
In the larger sized actuators, the layers of the mounting plate assembly may be far enough apart that you will need to
purchase a padlock with a longer loop. Do not attempt to force the layers closer to fit a small looped padlock, as property
damage may result.
11. Tighten the jam nut (key 128) against the mounting plate.
Operating the Locking Mechanism
To Unlock the Actuator

1. Remove the padlock. Loosen the jam nut (key 128), and unscrew the threaded bolt until it is stopped by the groove
pin (key 127) in the threaded bolt.
CAUTION
For normal operation of the actuator, the threaded bolt must be unscrewed far enough so that the actuator lever will not
contact the bolt, which could lead to property damage.
2. If you are going to leave the bolt threaded into the housing, lock it by tightening the jam nut (key 128) against the
mounting plate so that it cannot be screwed into the housing and interfere with normal actuator operation.
21
October 2012 D100319X012
Figure 7. Pipe Away Vent Assembly
32A9325-F 34B4646-B
NOTE: NOTE:
IF ACCESSORIES ARE NOT INSTALLED ON THE MOUNTING BOSS, FOR FIELD CONVERSION OF 1052 ACTUATORS, ATTACH COVER
INSTALL CAP SCREWS (KEY 143) TO PLUG OPENINGS. A MOUNT (KEY 141) OVER THE SPRING BARREL ADJUSTMENT OPENING
ING BOSS IS LOCATED ON BOTH SIDES OF THE SPRING BARREL. WITH SELF-TAPPING SCREWS (KEY 142). USE KEY 141 AS A DRIL
LING TEMPLATE. USE DRILL SIZE 2.6 mm (A #37 DRILL)
ACCESSORIES MOUNTING BOSS (0.104-INCH) BY 9.6 mm (0.38-INCH) DEEP.
j APPLY SEALANT
1052 SPRING BARREL
ACCESS COVER
4.00
0
3.25
40B3945-B
NOTE:
INSTALL THE HEX HEAD PLUG (KEY 140) INTO THE VENT OPEN
ING LOCATED IN THE ACTUATOR HOUSING.
DRILL SIZE IS 3.7 TO 4.0 BY 14.2 mm DEEP (0.145
HOUSING VENT PLUG LOCATION TO 0.158 BY 0.56-INCH). TAP SIZE IS 10-24
UNC-2B BY 9.6 mm (0.38-INCH) DEEP, 4 HOLES
34B4646-B
DRILLING AND TAPPING PATTERN

ACCESS PLATE ASSEMBLY
3/4 NPT VENT

CONNECTION
6.4
(0.25)
34B4646-B
TRAVEL NOTE:
INDICATOR FOR FIELD CONVERSION , DRILL AND TAP HOLE PATTERN IF
HOUSING HAS A NON-METALLIC ACCESS PLATE. USE KEY 137 AS
A DRILLING TEMPLATE IF DESIRED. OR, USE THE DIMENSIONS
PROVIDED IN THIS FIGURE FOR DRILLING AND TAPPING.
j APPLY SEALANT
34B4646-B
mm
(INCH)
ACCESS PLATE ASSEMBLY
MOUNTING YOKE AND COVER ASSEMBLY
22
D100319X012 October 2012
To Lock the Actuator

1. Make sure the actuator diaphragm rod is retracted fully. This will be the locked position of the valve. For a
push-down-to-close valve and actuator, the valve will be fully open when locked. For a push-down-to-open valve
and actuator, the valve will be fully closed when locked.
2. Make sure the jam nut (key 128) is loose. Screw the threaded bolt into the housing until it contacts the head on the
lever cap screw (see figure 6).
3. Rotate the threaded bolt until one of the holes in the lower locking disc (which is welded to the bolt) is in line with
the hole in the mounting plate (key 123). Tighten the jam nut against the mounting plate.
4. Lock the plate and disc together with a padlock. (The padlock is customer supplied.)
Pipe-Away Vent
WARNING
If a flammable or hazardous gas is being used as a supply medium, personal injury, or property damage could result from
fire or explosion of accumulated gas. A remote vent pipe cannot be relied upon to vent all gases from the installed location.
Provide adequate ventilation for the actuator/positioner assembly. Comply with local and regional codes, and keep the
vent pipeline as short as possible with few bends.
Some applications require venting of gas from the rotary actuator housing. The 3610 Series positioners vent into the
actuator housing, and from there, the gas has numerous avenues of escape.
Note
This modification is NOT intended to be a leak-proof or pressure-tight design. It is intended to aid in containing the gas that vents
from the positioner and allow for connection of piping to carry it away.
Take care that an adequate vent pipe size is used. This is particularly important with the larger size actuators that have
fast stroking speed requirements. In these situations, large quantities of gas can be vented very quickly through the
positioner, and adequate pipe-away capability must be obtained. Keep the vent piping as short as possible with few
bends.
Refer to the Disassembly and Assembly steps in the Maintenance section to gain access to the following parts. Key
numbers are shown in figure 7 unless otherwise noted.
Bushings–Remove the mounting yoke bushing (key 67), and the end plate cover bushing (key 31, figures 8 and 9).
Replace them with the pipe-away vent parts, as shown in figure 7. The mounting yoke bushing (key 132) is a two-piece
bushing with an O-ring (key 133). The end plate cover completes the assembly with a two-piece bushing (key 134)
with an O-ring (key 135).
Travel Indicator–A gasket (key 136) is placed under the travel indicator plate. Remove the indicator plate (key 37,
figures 8 and 9), install the gasket (key 136) as shown in figure 7.
Access Plate Assembly–A modified metal access plate assembly (key 137) is provided with a 3/4 NPT vent connection
as shown in figure 7. If the actuator had a plastic access plate, it will be necessary to drill and tap the actuator housing
23
October 2012 D100319X012
to install the machine screws (key 138) as shown in figure 7. Use the drilling and tapping pattern shown in figure 7, or
use the holes in the access plate as a template to mark holes.
When finished with all maintenance procedures requiring the access plate assembly (key 137) to be removed, use the
sealant (key 139) provided with the kit to seal the plate in place.
Housing Vent Plug–A vent is provided in the housing design. To plug this opening, the pipe-away vent kit provides a
hex pipe plug (key 140) for this opening, as shown in figure 7. Install the hex plug (key 140) into this opening and
tighten it.
Accessories Mounting Boss–If accessories are not installed on the mounting boss, install cap screws (key 143) to plug
openings. The location to install the cap screws (key 143) is shown in figure 7. A mounting boss is located on both
sides of the spring barrel (key 12, figures 8 and 9).
1052 Spring Barrel Access Cover–For field conversion of 1052 actuators, attach the cover (key 141) over the spring
barrel adjustment opening with self-tapping screws (key 142). Use key 141 as a drilling template. Drill size is 2.6 mm (A
#37 drill) (0.104-inches) by 9.6 mm (0.38-inches) deep.
Parts Ordering
When corresponding with your Emerson Process Management sales office about this equipment, refer to the serial
number found on the actuator nameplate (key 41, figures 8 and 10). Also, specify the complete 11-character part
number from the following parts list when ordering replacement parts. The Size 70 actuator is available only in 1052
actuators.
WARNING
Use only genuine Fisher replacement parts. Components that are not supplied by Emerson Process Management should
not, under any circumstances, be used in any Fisher valve, because they may void your warranty, might adversely affect the
performance of the valve, and could cause personal injury and property damage.
Parts Kits
Top-Mounted Handwheel Retrofit Kits

Kit provides parts to add a top-mounted handwheel. Kit Number 1 includes the handwheel assembly only. Kit Number
2 includes Kit Number 1 and a new upper case (key 1) that is required to mount the handwheel assembly.
Kit Number 1 Kit Number 2
Key Description Part Number
Key Description Part Number
Size 40 38A1213X072
Size 40 38A1213X032 Size 60, 38A1213X022
Size 60 38A1213X062 Size 70 1052 only CV8010X0062
Size 70 1052 only CV8010X0052
24
D100319X012 October 2012
Pipe-Away Vent Retrofit Kit

Vent-away kits include: access plate, two-piece bushing, two O-rings, gasket, and the application of a sealant (sealant
supplied with retrofit kit). For 1052, an additional cover plate and screws are required for the spring adjustment
access.
See figure 7.
Pipe-Away Vent Retrofit Kit Numbers

SHAFT DIAMETER 1051 KIT PART 1052 KIT PART
mm Inches SIZE NUMBER SIZE NUMBER
12.7 1/2 40 34B4646X022 40 34B4646X162
15.9 5/8 40 34B4646X032 40 34B4646X182
40 34B4646X042 40 34B4646X202
19.1 3/4
60 34B4646X052 60 34B4646X212
40 34B4646X062 40 34B4646X222
22.2 7/8
60 34B4646X072 60 34B4646X232
40 34B4646X082 40 34B4646X242
25.4 1
60 34B4646X092 60 34B4646X252
40 34B4646X102 40 34B4646X262
31.8 1-1/4 60 34B4646X272
60 34B4646X112
70 34B4646X282
60 34B4646X292
38.1 1-1/2 60 34B4646X122
70 34B4646X302
60 34B4646X312
44.5 1-3/4 60 34B4646X132
70 34B4647X322
60 34B4646X332
50.8 2 60 34B4646X142
70 34B4647X342
25
October 2012 D100319X012
Figure 8. Typical 1051 Actuator Assembly
j APPLY LUBRICANT/SEALANT
55A9255-B
Parts List Key
3*
Description
Diaphragm, molded (NBR/nylon)

Part Number
Standard
w/handwheel, or w/adj up stop
Note Size 40 2E670002202
Part numbers are shown for recommended spares only. For part Size 60 2E859702202
numbers not shown, contact your Emerson Process Management sales Size 70 2N126902202
office. w/adj down stop
Size 40 2E669902202
Size 60 2E859802202
Size 70 2N130902202
Common Parts (Figures 8 and 9) VMQ/polyester
Standard
Key Description Part Number w/handwheel, or w/adj up stop
Size 40 2E6700X0012
1 Casing, upper Size 60 2E8597X0032
2 Diaphragm Casing, lower (steel zn pl) Size 70 2N1269X0012
26 *Recommended spare parts

D100319X012 October 2012
Figure 8. Typical 1051 Actuator Assembly (Continued)
55A9255-B
B2679
Key Description Part Number Key Description Part Number
w/adj down stop 8 Stop, Travel (2 req'd)

Size 40 2E6699X0042 9 Screw, Cap, Hex Socket
Size 60 2E8598X0012 10 Diaphragm Rod
Size 70 2N1309X0012 11 Spring See following table
4 Diaphragm Head 12 Spring Barrel
5 Screw, Cap, Hex Hd, 13 Spring Seat See following table
Size 40 (12 req'd) 16 Nut, Hex
Size 60 (16 req'd) 17 Bearing Rod End
Size 70 (24 req'd) 18 Screw, Cap, Hex Hd
6 Nut, Hex 19 Nut, Hex, Jam
Size 40 (16 req'd) 20 Housing
Size 60 (24 req'd) 20 Modified Housing
Size 70 (28 req'd) 21 Screw, Cap, Hex Hd (4 req'd)
7 Screw, Cap, Hex Hd 22 Yoke, Mounting
Size 40 (4 req'd) 23 Screw, Cap, Hex Hd (4 req'd)
Size 60 (6 req'd) 27 Lever
Size 70 (10 req'd) 28 Screw, Cap, Hex Hd
*Recommended spare parts 27

October 2012 D100319X012
29 Hub 139* O-ring, (NBR)

30 Ring, Retaining, Ext Size 40 1D267306992
31* Bushing Size 60 1D547106992
Size 40 12A9373X012 Size 70 1D269106992
Sizes 60 & 70 12A9374X012 140* Pin, Groove
33 Cover Carbon Steel-Plated
34 Screw, Cap, Hex Hd Size 40 1F118028992
w/o switches, w/ TopWorxt DXP M21GNEB, 4200, S31600 (316 SST)
w/BZE6-2RN or DTE6-2RN SW, Size 60 1B627035072
w/micro switch w/90 deg, or w/ 3710 positioner 141 Screw, Cap, Hex Hd
(4 req'd) Size 40 (6 req'd)
w/NAMCO or LSA/LSX switches, w/1 or 2 GO switches, Size 60 (8 req'd)
w/ LSA/LSX sw, or w/NAMCO or LSA/LSX switch Size 70 (12 req'd)
(2 req'd) 142 Body
35 Scale, Indicator 164 Body Extension
36 Screw, Self Tapping (2 req'd) 169 Grease Fitting
37 Travel Indicator 171 Washer, plain
38 Self-Tapping Screw (2 req'd) 174 Retaining Screw
38 Machine Screw (2 req'd) 175 Bearing, Thrust
39 Plate, Cover 176 Bearing Race, Thrust, 1052 Size 70 only (2 req'd)
40 Screw, Cap, Hex Hd (4 req'd) 241 Lithium grease lubricant
41 Nameplate 242 Thread locking sealant
42 Screw, Drive (4 req'd) 244 Anti-seize lubricant
56 Warning Label 246 Spacer
57 Turnbuckle 247 Pin, Cotter
58 Nut, Hex, Jam
59 Plate, Access
63 Washer, Plain
Size 40 (4 req'd)
Size 60 & 70 (2 req'd)
67* Bushing See following table Adjustable Up Travel Stop
71
72
Bearing, Thrust
Bearing Race (2 req'd) (Figure 11)
73 Bearing Seat 133 Stem
74 Screw, Adjusting 135 Plate, Pusher
76 Lithium grease lubricant 137 Nut, travel stop
77 Thread locking sealant 138* O-Ring, (NBR)
78 Screw, Cap Size 40 1D237506992
9.5 & 12.7 mm (3/8 & 1/2 inch) Shafts (2 req'd) Size 60 1B885506992
15.9 thru 50.4 mm (5/8 thru 2-inch) Shafts (4 req'd) Size 70 1C415706992
82 Diaphragm Head, lower 139* O-Ring, (NBR)
83 Plug, Protective Size 40 1D267306992
--- Pipe Bushing (not shown) Size 60 1D547106992
144 Warning Nameplate Size 70 1D269106992
146 Spacer 140* Pin, Groove
carbon steel-plated
Size 40 1F118028992
S31600 (316 SST)
Size 60 1B627035072
141 Screw, Cap, Hex Hd
Size 40 (6 req'd)
Top-Mounted Handwheel Size 60 (8 req'd)
(Figure 10) 142

Size 70 (12 req'd)
Body
51 Handwheel 164 Body Extension
54 Nut, Hex, Slotted 169 Grease Fitting
133 Stem 171 Spacer
135 Plate, Pusher 174 Retaining Screw
137 Nut, Hex, Jam 175 Bearing, Thrust
138* O-Ring, (NBR) 176 Bearing Race, Thrust, 1052 Size 70 only (2 req'd)
Size 40 1D237506992 187 Travel Stop Cap
Size 60 1B885506992 241 Lithium grease lubricant
Size 70 1C415706992 242 Thread locking sealant

D100319X012 October 2012
Figure 9. Typical 1052 Assembly
A
58A9224-A
B2680
29
October 2012 D100319X012
Figure 9. Typical 1052 Assembly (continued)
55A9224-A
SECTION A-A FOR SIZE 40, 60, AND 70 ACTUATORS
Figure 10. Handwheel Assemblies
j APPLY LUBRICANT j APPLY LUBRICANT/SEALANT

38A1213-B CV8010-G
TOP-MOUNTED HANDWHEEL ASSEMBLY FOR TOP-MOUNTED HANDWHEEL ASSEMBLY FOR

SIZE 40 AND 60 ACTUATORS SIZE 70 ACTUATOR
30
D100319X012 October 2012
Figure 11. Adjustable Up Travel Stops
j APPLY LUBRICANT
28A1214-A
j APPLY LUBRICANT ADJUSTABLE UP TRAVEL STOP

28A1207-B FOR SIZE 60 ACTUATORS
ADJUSTABLE UP TRAVEL STOP
FOR SIZE 40 ACTUATORS
CV8057-E
ADJUSTABLE UP TRAVEL STOP FOR SIZE 70
1052 ACTUATORS
31
October 2012 D100319X012
Figure 12. Adjustable Down Travel Stop
NOTE:
FOR SIZE 60 ACTUATORS, A SECOND HEX NUT (KEY 54) IS USED IN THE PLACE OF THE HEX NUT (KEY 63)
38B5654-B
A7238
Adjustable Down Travel Stop Pipe-Away Vent (Figure 7)

(Figure 12)
Key Description Part Number Note
Complete retrofit kits are listed at the beginning of the parts list. Use this
54 Nut, Hex listing for individual replacement parts
Size 40 (1 req'd)
Size 60 & 70 (2 req'd)
63 Flange Nut
133 Travel Stop Stem Key Description Part Number
134 Washer (plain carbon steel)
139* O-Ring (NBR) 132* Lined Bushing (steel/PTFE) yoke side
Size 40 1D267306992 12.7 mm (1/2 inch) dia. shaft (2 req'd) 1U902599402
Size 60 1D547106992 15.9 mm (5/8 inch) dia. shaft (2 req'd) 14B4642X012
Size 70 1D269106992 19.1 mm (3/4 inch) dia. shaft (2 req'd) F1918348112
141 Screw, Cap, Hex Hd (steel zn pl) 22.2 mm (7/8 inch) dia. shaft (2 req'd) 14B4631X012
Size 40 (6 req'd) 25.4 mm (1-inch) dia. shaft (2 req'd) 14B4632X012
Size 60 (8 req'd) 31.8 mm (1-1/4 inch) dia. shaft (2 req'd) 14B4633X012
Size 70 (12 req'd) 38.1 mm (1-1/2 inch) dia. shaft (2 req'd) 14B4634X012
142 Travel Stop Body 44.5 mm (1-3/4 inch) dia. shaft (2 req'd) 14B4635X012
187 Travel Stop Cap 50.8 mm (2-inch) dia. shaft (2 req'd) G1668548112
189 Nut, Hex, Jam 133* O-Ring (NBR)
Size 40 & 60 (1 req'd) 12.7 mm (1/2 inch) dia. shaft 1J4888X0052
Size 70 (2 req'd) 15.9 mm (5/8 inch) dia. shaft 11A8741X052
241 Lithium grease lubricant 19.1 mm (3/4 inch) dia. shaft 1F4636X0032
22.2 mm (7/8 inch) dia. shaft 10A3805X012
25.4 mm (1-inch) dia. shaft 10A8217X042
31.8 mm (1-1/4 inch) dia. shaft 14A6981X012
38.1 mm (1-1/2 inch) dia. shaft 1F1153X0012
Locking Assembly (Figure 6) 44.5 mm (1-3/4 inch) dia. shaft 1P1676X0012
(Size 40, 60, and 70 Actuators) 50.8 mm (2-inch) dia. shaft

134* Bushing (steel/PTFE) hub side
10A3800X012
123 Mounting Plate Size 40

124 Mounting Plate Assembly 12.7 to 22.2 mm (1/2 to 7/8 inch)
127 Groove Pin dia. shaft (2 req'd) 14B3503X012
128 Jam Nut Size 40
129 Cap Screw 25.4 to 31.8 mm (1- to 1-1/4 inch)

D100319X012 October 2012
dia. shaft (2 req'd) 14B3503X012 136 Travel Indicator Gasket

Size 60 137 Access Plate assembly
19.1 to 50.8 mm (3/4 to 2-inch) 138 Machine screw (4 req'd)
dia. shaft (2 req'd) 14B4310X012 139 Blue RTV or equivalent
135* O-Ring, hub side 140 Plug
Size 40 141 Spring Barrel Cover, 1052 only (2 req'd)
12.7 to 22.2 mm (1/2 to 7/8 inch) dia. shaft 1K594906562 142 Self-tapping Screw
Size 40 Size 40 (4 req'd)
25.4 to 31.8 mm (1- to 1-1/4 inch) dia. shaft 1K594906562 Size 60 (5 req'd)
Size 60 Size 70 (8 req'd)
19.1 to 50.8 mm (3/4 to 2-inch) dia. shaft 1U2504X0042 143 Cap Screw
Size 40 & 70 (4 req'd)
Size 60 (2 req'd)
Key 11. Spring(1) for 1051 Actuator Only (Steel) Key 13. Spring Seat(1) for 1051 Actuator Only (Steel)
CASING PRESSURE KEY 11 KEY 13
ACTUATOR
SPRING PART SPRING SEAT
Bar Psig SIZE
NUMBER PART NO.
40 1L217427042 12A9447X012
1K162727082 12A9450X012
0 to1.2 0 to 18
60 1N937327082 12A9448X012
1N937327082 12A9449X012
1L217327042 12A9446X012
40
1P637127082 12A9447X012
0 to 2.3 0 to 33 1K162827082 12A9448X012
1K162827082 12A9449X012
60
1N937327082 12A9448X012
1N937327082 12A9449X012
40 1L217327042 12A9446X012
0 to 2.8 0 to 40 1K162827082 12A9448X012
60
1K162829082 12A9449X012
0 to 3.8 0 to 55 40 1L217327042 12A9446X012
0.2 to 1.0 3 to 15 60 1K162727082 12A9450X012
1L217327042 12A9446X012
40
1P637127082 12A9447X012
0.2 to 2.1 3 to 30
1K162827082 12A9449X012
60
1N937327082 12A9449X012
1. For more detailed ordering information concerning spring selection to obtain the torque required by the valve, consult your Emerson Process Management sales office.

October 2012 D100319X012
Key 11. Spring(1) for 1052 Actuators Only (Steel)

INITIAL SPRING COMPRESSION KEY 11
CASING PRESSURE ACTUATOR
Push-down-to-open Push-down-to-close SPRING PART
SIZE
Bar Psig Bar Psig Bar Psig NUMBER
0.2 3.0 0.2 3.0 1L217427042
0 to 18 40
0.3 4.3 0.2 3.0 1P637127082
0 to1.2
0.3 3.7 0.2 3.0 1K162727082
0 to 18 60
0.2 3.5 0.2 3.0 1N937327082
0.3 4.3 0.3 4.3 1P637127082
0 to 33 40 0.4 6.0 0.2 3.0 1L217327042
0.3 4.4 0.2 3.0 1N844027082
0 to 2.3 0.2 3.5 0.2 3.5 1N937327082
0 to 33 60 0.5 7.0 0.2 3.0 1K162827082
0.5 6.8 0.2 3.0 1P270227042
0 to 33 70 0.7 10.1 0.2 3.0 1R676027082
0.3 4.4 0.2 3.0 1N844027082
0 to 40 40
0.4 6.0 0.2 3.0 1L217327042
0 to 2.8 0.5 6.8 0.2 3.0 1P270227042
0 to 40 60
0.5 7.0 0.2 3.1 1K162827082
0 to 40 70 0.7 10.1 0.2 3.3 1R676027082
0 to 55 40 0.3 4.4 0.2 3.5 1N844027082
0 to 3.8
0 to 55 70 0.7 10.1 0.7 10.1 1R676027082
3 to 15 40 - - - - - - 0.2 3.0 1L217427042
0.2 to 1.0
3 to 15 60 0.3 3.7 0.2 3.0 1K162727082
0.3 4.3 0.3 4.3 1P637127082
3 to 30 40 0.4 6.0 0.2 3.0 1L217327042
- - - - - - 0.2 3.0 1N844027082
0.2 to 2.1 0.2 3.5 0.2 3.5 1N937327082
3 to 30 60 0.5 7.0 0.2 3.0 1K162827082
- - - - - - 0.2 3.0 1P270227042
3 to 30 70 0.7 10.1 0.2 3.0 1R676027082
1. For more detailed ordering information concerning spring selection to obtain the torque required by the valve, consult your Emerson Process Management sales office.
34
D100319X012 October 2012
Keys 22 and 67*. Mounting Yoke Assembly

ACTUATOR VALVE SHAFT DIAMETER KEY 22 YOKE KEY 67
VALVE DESIGN
SIZE mm Inches CAST IRON(1) BUSHING, PTFE
12.7 1/2 12A9799X0A2 - - - 1U902599402
40 15.9 5/8 12A9799X0B2 - - - 12A9555X012
19.1 3/4 12A9799X0C2 - - - 12A9556X012
22.2 7/8 12A9799X0E2 - - - 12A9557X012
40 25.4 1 12A9799X0G2 - - - 12A9775X012
31.8 1-1/4 12A9799X112 - - - 12A9558X012
CV500, V150, V200, V250, V300,
19.1 3/4 12A9799X0D2 - - - 12A9556X012
8510, 8532, and 8560
60 22.2 7/8 12A9799X0F2 - - - 12A9557X012
25.4 1 12A9799X0H2 - - - 12A9775X012
31.8 1-1/4 12A9799X0J2 - - - 12A9558X012
38.1 1-1/2 12A9799X0K2 - - - 12A9559X012
60 and 70
44.5 1-3/4 12A9799X0L2 - - - 10A3848X012
50.8 2 12A9799X0M2 - - - 12A9715X012
12.7 1/2 - - - 32A9755X012 1U902599402
40 15.9 5/8 - - - 32A9742X012 12A9555X012
19.1 3/4 - - - 32A9743X012 12A9556X012
25.4 1 - - - 32A9757X012 12A9575X012
40
31.8 1-1/4 - - - 32A9746X012 12A9558X012
9500 for G Mounting 19.1 3/4 - - - 32A9750X012 12A9556X012
60
25.4 1 - - - 32A9778X012 12A9775X012
31.8 1-1/4 - - - 32A9753X012 12A9558X012
38.1 1-1/2 - - - 32A9754X012 12A9559X012
60 and 70
44.5 1-3/4 - - - 35A9704X012 12A9560X012
50.8 2 - - - 35A9705X012 12A9561X012
1. The yokes in this column are available as yoke-bushing assemblies, However, the bushings are available as replacement parts.

October 2012 D100319X012
Neither Emerson, Emerson Process Management, nor any of their affiliated entities assumes responsibility for the selection, use or maintenance
of any product. Responsibility for proper selection, use, and maintenance of any product remains solely with the purchaser and end user.
Fisher, Vee-Ball, FIELDVUE, and TopWorx are marks owned by one of the companies in the Emerson Process Management business unit of Emerson Electric
Co. Emerson Process Management, Emerson, and the Emerson logo are trademarks and service marks of Emerson Electric Co. All other marks are the
property of their respective owners.
The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not
to be construed as warranties or guarantees, express or implied, regarding the products or services described herein or their use or applicability. All sales are
governed by our terms and conditions, which are available upon request. We reserve the right to modify or improve the designs or specifications of such
products at any time without notice.
Marshalltown, Iowa 50158 USA
Sorocaba, 18087 Brazil
Chatham, Kent ME4 4QZ UK
Dubai, United Arab Emirates
Singapore 128461 Singapore
www.Fisher.com
36
E 1976, 2012 Fisher Controls International LLC. All rights reserved.

Fisher 1051 & 1052 Actuator

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Product Bulletin

1051 and 1052 Actuators 61.1:1051

Fisherr 1051 and 1052 Diaphragm Rotary

Both actuator types are designed for easy installation W8172-3

Available Configurations Size 70: J 31.8 (1-1/4), J 38.1 (1-1/2),

Maximum Diaphragm Casing Pressure(5) See table 3

Size 20: 4.1 bar (60 psig) Material Temperature Capabilities(1)

Mounting Positions Options

Options applications without a positioner. For additional

Table 1. Diaphragm Casing Displacement Table 3. Construction Materials

Figure 2. Sectional Views Typical of Size 40, 60,and 70 Actuators

Figure 3. Sectional Views of the Size 33 Actuator

Figure 4. Optional Adjustable Travel Stops

TYPICAL ADJUSTABLE UP TRAVEL STOP

TYPICAL ADJUSTABLE DOWN TRAVEL STOP

Table 4. Construction Features and Option Applicability by Actuator Size

Figure 5. Size 33 Actuator with Externally Adjustable Figure 6. Top-Mounted Handwheel

Table 5. Mounting Styles and Positions

MOUNTING ACTION(1) BALL/PLUG DISC/BALL 8510B, 8532,

Figure 7. Mounting Styles and Positions (also see table 5)

STYLE A POSITION 1 1 POSITION 1 1

PADLOCK CAP GROOVE

Figure 10. Dimensions (also see tables 6, 7 and 8)

Table 7. Actuator / Valve Body Mounting Dimensions

Table 8. Dimensions for Top-Mounted Handwheel

121983, 2013 Fisher Controls International LLC. All rights reserved.

Fisherr 1051 and 1052 Style F and G

Installing the Locking Mechanism . . . . . . . . . . . . . 20

Table 1. 1051 and 1052 Actuator Specifications

Operation Size 70: J 31.8 (1-1/4), J 38.1 (1-1/2), J 44.5

Valve Shaft Diameters, mm (Inches) Approximate Weights

Figure 2. Typical 1052 Actuator Adjustable Spring Seat

Table 2. Approximate Actuator Weights

Emerson Process Management

Table 3. Recommended Bolting Torques

MOUNTING ACTION(1) BALL/PLUG DISC/BALL 8510B, 8532,

STYLE A POSITION 1 1 POSITION 1 1

Figure 4. Lever Operating Clearance

OPERATING CLEARANCE 1.6

Valve Flow Direction

Table 4. Wrench Size Required for Turnbuckle Adjustment, Inches

2. Loosen the lower locknut (key 16).

1052 Spring Adjustment

10. To relieve spring compression:

b. For 1052 actuators:

b. For 1052 actuators:

(3.) Proceed as appropriate:

D Be certain the travel stops (key 8) are located as shown in figure 5.

b. For 1052 actuators (see figure 9):

Figure 5. Travel Stop Orientation

A2534-1 SIZE 40 SIZE 60 AND 70

Changing Actuator Mounting

1. Remove the tubing or piping from the top of the actuator.

12. Follow the instructions given in the Turnbuckle Adjustment section.

Top-Mounted Handwheels and Adjustable Travel Stops

Handwheel Maintenance and Adjustable Travel Stop

For Adjustable Down Travel Stops:

Figure 6. Actuator Locking Mechanism

CAP SCREW (1 REQ'D) (KEY 129)

MOUNTING PLATE ASSY