MSS SP 134 2006
MSS SP 134 2006
MSS SP 134 2006
Standard Practice
Developed and Approved by the
Manufacturers Standardization Society of the
Valve and Fittings Industry, Inc.
127 Park Street, NE
MSS
Vienna, Virginia 22160
Phone: (703) 281-6613 www.mss-hq.org
Fax: (703) 281-6671
e-mail: Info@mss-hq.org
MSS STANDARD PRACTICE SP-l34
This MSS Standard Practice was developed under the consensus of the MSS Technical Committee 114 and the
MSS Coordinati ng Committee. The content of this Standard Practice is the resul t of the elTorts of competent and
concerned volunteers to provide an effective, clear, and non-exclusive specification that will benefit the industry
as a whole. This MSS Standard Practice is imended as a basis for common practice by the manufacturer, the
user, and the general public. The existence of an MSS Standard Practice does not in itself preclude the
manufacture, sale, or use of products not confonning 10 the Standard Practice. Mandatory confonnance IS
established only by reference in a code, specification, sales contract, or public law, as app licable.
Unless otherwise specifically noted in this MSS SP, any standard referred to herein is identified by the date of
issue that was applicable to the referenced standard(s) al the date of iss ue of this MSS SP. (See Annex B.)
U.S. customary units in this Standard Practice are the standard: the metric units are for reference only.
Non·tolemnced dime nsions in this Standard Practice are nominal, an d, unless otherwise specified, shall be
considered " for refere nce onl y".
In this Standard I'mctice all notes, annexes, tables, and figures are construed to be essential to the understanding
of the message of the standard, and are considered pan of the text unless noted as "supplemental". All appendi.
ces appearing in this document are construed as "supplemental". Supplemental" infonnation does not include
mandatory requirements.
Any part of this standard may be quoted. Credit lines should read 'extracted from MSS SP·134, 2006a
with permission of the publi.~her. the Manufacturers Standardization Society. ' Reproduction prohibited
under copyright conven tion unle.u written permission is granted by the Manuf acturers Stamlardiza/ion
Society of/he Valve and Fillings Industry Inc.
Copyright 0 , 2006 by
Manufacturers Standardization Society
of the
Valve and Fittings Indusuy, Inc.
Printed in U.s.A.
,.
MSS STANDARD PRA CTICE SP-l34
TABLE OF CONTENTS
SECI'ION PAGE
TABLE
ANNEX
A Low Temperature Cryogenic Testing ......... .................... ............................................. ............. II
..
H
MSS STANDARD PRA CTICE SP-l34
I
MSS STANDARD PRA CTICE SP-l34
3.4 Packing and gasket materials in direct contact 4.3 Valves shall be designed for operating al
with the service flu id shall be capable of operating temperatures from + lS(flF (+6SOC) to the lowest
at temperatures from + 150oF (+6S0q to the lowest cryogenic temperature of the service fluid.
cryogenic tcmpcrnture of the service fluid specified
in the purchase order. 4.4 The pressure mting of the valve al service
tcmpcrdturcs below -20~ (_290q shall not exceed
3.5 When tube materilll is used for constructing the ASME B 16.34 pressure rati ng III .2f'fF (-2ifC)
bodylbonnci extensions the tube material shall be to I OO~ (3S°C) for the applicable valve body
seamless. material and appropriate Closs designation.
4.1 The requirements of ASME B 16.34, paragraph 4.5. 1 Body/Bonnet Extensions should be used
2, 1.6, shall be met for weld fabricated bodyibonnet primarily for temperatures below _ISOup (_ 100°C).
extensions.
4.5 .2 Stem to extension tube diametrical clearance
4,2 Valves shall have a bodyibonnet extension should be minimized to help reduce convt'ctive heat
tube that distants the stern packing and valve losses.
operating mechanism from the cryogenic fluid in the
valve bodyibonnet extension that might otherwise 4.5.3 Por cold box applications, valves with
damage or impair the function of these items. The extended bodyibonnets shall be capable of operating
¥yibonnet extension sholl be of sufficient length with the stern oriented from 15° to 90° above the
to provide on insulating gas column that prevents the horizontal plane.
packing area and operating mechanism from
freezing. 4.5.4 Valves with extended bodylbonnets in
cryogenic gas service shall be capable of operating
The purchaser shall provide the bodylbonnet in any stem orientation unless otherwise limited by
extension length when Table IA or Table I B the manufacturer.
extension lengths are not adequate.
4.6 Valve Siems
4.2.1 Extension tube thickness sholl take into
account pressure stresses as well as operating 4.6. 1Gate and globe valve stems shall have a
torque, stem thrust and bending stresses induced by diameter to length ratio that precludes clastic
handwheels, gears and power actuators. buckling while under compressive 10ading.(I)
Section 7.1 establishes a minimum extension length
4.2.2 TIle bodylbonnet extension shall meet the dimension that impacts on final stem length.
minimum wall thickness requirements of ASME
B 16.34, parugraph 6. 1.3, for the applicable pressure 4.6. 1.1 Gate and globe vulves with a stem-disc
class of the vulve body unless a greater wall connection serving as the lower stem support guide
thickness is specified by the parent valve shall have, in the closed postion, a stem length to
specification. If the bodylbonnet extension is made stem diameter ratio as follows:
from a different ASME BI 6.34, Table 1, material
than the valve body and has nn ASME B16.34 SII1", Guided J)jsclGate
pressure/temperature rating less than the valve body,
then the extension thickness must be increased
proportionately to meet the pressure/temperature _<!L
L
d - 2
E
rating of the body at all applicable temperatures.
2
MSS STANDARD PRA CTICE SP- l34
3
MSS STANDARD PRA CTICE SP-l34
5. GATE & GLOBE VALVES 6.3 Ball and butterfly valves shall be of a fire
safe design and be fitted with an anti·static device
5. 1 Gate valves shall be provided with a means for when valve construction features may al10w an
allowing any pressure increase in the bodylbonnet electrical potential to develop between parts of
-extension cavity to be vented 10 the high pressure val ves.
side of the closed obturator, unless otherwise
'specified in the purchase order. Double block and 7. EXTENSION LENGTH
'bleed valves shall be vented 10 the low pressure side
7. 1 Minimum extension lengths for ris ing stem
<of the closed wedge unless otherwise spec ified by
gate/globe valves Ilnd for q uarter·turn valves shan
lhe purchase order.
be per Tables I A and I B, unless othelWise
5.2 An arrow indicating flow direction for uni- specified in the purchase order.
directional valves shall be cast, stamped, or etched 7.2 Cold box valve dimes ions are for valves
on the valve body. Alternatively, an arrow tag may with bodylbonnet extensions on valves in
be attached by welding to the valve body. cryogenic liquid/vapor service, which have
installation orientation restrictions. See Section
5.3 The manufacturer shall provide a mCllns of
protection agains t over-pressurization of the 4.5.3.
bodylbonnct extension cavity by providing a vent in 7.3 Non·cold box valve dimensions are for
the obturator. Backseats, when utilized, may be at those valves with bodylbonnet extensions for
the bottom or at the lOp of the bodylbonnet valves in cryogenic gas or liquid service, with the
extension. Backseats at the bollom of the extension orientations of Sections 4 .5.3 or 4.5.4 as
may increase the risk of pressure buildup in the applicable.
bodylbonnet extension cavity if the valve is
backseated and allowed to wann to ambient 8. FABRICATION
temperatures. In all cases the manufacturer shal1
8.1 Valves fabricated by welding shall be done
provide a means of protecting against over
in accordance with ASME B 16.34, paragraph
pressuri zation.
2.1.6.
6. BALL & BUTTERFLY VALVES 8.2 Welding procedures, welders, and welding
operators, shall be qualified under the provisions of
6. 1 Ball valves shall be provided with a provision
ASME Boiler and Pressure Code, Section VUl ,
to vent the body and bonne t elttension cavity to the
Division I. Welding requirements of the parent
upstream side of the closed ball, either by drilling a
standard shall be met when specified in the
bleed hole in the ball or by other means of
purchase order.
protection against over-pressurization of the
bodylbonnet extension cavity. Double block and 8.3 The weld configuration of the bonnet
bleed valves shall be vented to the low pressure side extension tube to bodylbonnct connections may be
of the ball valve unlcss othclWise specified in the full penctration Vee groove, pa rtial penetration
purchase order. Vee groove or fi llet typc. Full strength threaded
joints with seal welds can also be used.
6.2 An arrow indicating flow direction shall be
cast, stamped, or etched on the valve body. 8.4 Non·destructive examination of welds shall
Alternatively, an arrow tag may be attached by be pcrfonned per ASME Boiler and Pressure
welding to the valve body. For bi·directional ban Vessel Code, Section VIU, Division I to achieve a
valves, including block and bleed, an arrow joint efficiency as required by ASME B 16.34,
indicating flow di rection is not required. paragraph 2.1.6.
Weld quality requirements of the parent standard
shall be met when specified in the purchase order.
4
MSS STANDARD PRACTICE SP-l34
9. PRODUCTION PRESSURE TESTING 9.3 Following ASME B16.34 final testi ng, each
valve shall be dried of all water lest solution trapped
9. 1 Prior to testing, each valve shall be cleaned and in the valve.
degreascd as specified in the purchase order.
9.4 Each fabricated bodylbonnct extension shall be
9.2 Each valve shall be shell and closure tested as subjected to II supplemental pneumatic testing with
required by ASME 816.34. Each valve shall be inert gas at 80-100 psi (5.5-6.9 bar) for II minimum
tested in accordance with the pare nt standard when duration of 60 seconds. No visible bubble leakage is
specifi ed in the purc hase order. allowed through welds or the pressure boundary as
determined by testing under water, with an applied
foaming solution, or with II mass leak detection
device.
5
MSS STANDARD PRA CTICE SP-l34
6
SP-l34
5
6
til' PART NAMI<::S
~
7
o/J
1. H lmdwh ~ 1 Nut
«
~ 2. Identificlltion Plate
VI 3. Handwht.oel
-.'"c 4.
S.
Stem Nut
Gland
~ 6. Gland Hulling
7. Yoke
~
'"'"
VI 9
8.
9.
Packing
Stem ·
·
10. Bonnet Extension
.t:
C, II. Bonnet Bolting
<: 12. Bonnet ,
·
'"<:
-'
13.
14.
Gasket
Disc Nut
15.
.-VI
0
L 16.
0 ""
Body
<:
6i'"
7
SP-l34
5
6
~ PART NAMES
'"«
~
(f)
7 1.
2.
Hlmdwhei!1Nut
Jdentification Plate
3. Hllndwht.-e1
LU
-' 4. Stem Nut
<II ;. Gland Dolting
~ ••7. Gland
LU Pllcking
LU Stem
(f) •• Donnet Extension
~
••
10. Donnet Bolting
I
II. Bonnet
f-
(!) a 12. Gasket
Z
LU L 13.
14.
Seat Ring
Gate
-' 9
Z 15. 80dy
0
Vl 1
zLU
f-
><
LU 11
13
14
PAKTNAMES
-
= I. Dody
..
~
~
~
2.
4.
5.
Donnet
Stem
Bull
6. Thrust Washer
'"-'
w 7. Stem BWlhing
=
~
9.
II.
Seat
Packing Hange
w 12. Gland Bushing
w
\!!. 13. Packing Ring
z: 15. Stud
.... 16 . Nut
'"~:: 19.
33.
Gasket
Handle
:z: 46. Spring
-:z:'"
0 55.
56.
Bushing
Hex Hcud Caps Sc:rew
w 63. Plicking Washer
0-
X 90. Extension
w
PART NAMES
--.'" I.
2.
Gear Actuator
Handwheel
-'"
«
w
oj l
3.
••
5.
Handwheel Pin
Mounting Hracket
Mounting Holt
;: 6. Upper Journal Hearing
7. Packing
~
-
:~z:
8.
••
10.
Housing Extension
Stem
Stop Hearing
!i
...z
w II.
1.2.
Thrust/Journal Bearing
~isk
Q 13. Body
~ I•. Packing Stud
w
~ IS. Packing Holt
1:5
, 16. Packing Follower
10
S P-l34
ANNEX A
Low Temperature Cryogenic Testing
Note: Ths Annex is informative and does not include normative requiremen ts
A I. Cryogenic q ualification or production testing A4.2 A low pressure (15 psi) ( 1 bar) helium
at temperatures as low as -320~ (- I 95°q may purge shall be staned and maintained duri ng
be required by the purchase order. In these immersion and cool-down.
cases, liquid nitrogen shall be used as the
immersion and cool down test fluid. A4.3 The valve shall be lowered into an
insulated tank and liquid nitrogen shall be
A2. PREI.IMINA RY T Ii:ST PREPARATIONS allowed to fill the insulated tank around valve.
to a level approximately ( I in.) (25.4 mm)
A2.1 The valve or valves shall be pre-tested above the bodylbonnct bolting or bodylbonnet
. in accordance with parent valve standard at welded connection.
ambient tcmpcrature.
A4.4 Aflcr the valve has stabilized at the test
A2.2 nle valvc or valves shall be purged tcmpcraturc! the helium pur&e shall be turned
with clean dry nitrogen to remove any off and the valve cycled opcn and closed (3)
re mai ning moisture. three times.
"
MSS STANDARD PRA CTICE SP-l34
ANNEX A (continued)
Low Temperature Cryogenic Testing
A4.6.4 The maximum allowable leakage A4.8.2 Shell test shall be perfomlcd while
rates shall not exceed those as listed in the valve is still at cryogenic temperatures
Table A I. from previous seat testing.
A4.6.5 Re peat the sequence described in A4.8.3 Valve shall be partially opened
Sections A4.6.1 through A4.6.4 on each and pressurized to the lesl pressures listed
seat for hi-directional valves. in Table A2.
A4.7 High Pressure Seat Test A4.8.4 After thc shell pressure has
stabilized, thc valvc shall be lifted from the
A4.7. [ Following the low pressure scat liquid nitrogcn for aeccss by the hclium-
lest and with valve in the open position, sniffing device.
gradually increase the helium pressure until
the pressure reaches 80 psi (5.5 bar), then A4.8.5 Any leakage in excess of I x 10.4
close the valve and continue pressurization Sid. cc/scc shall be cause for rejection.
until the va lve reaches the tesl pressure
listed in Table A2. The valve shall be A4.S.6 Packing leakage Ihat can be
elosed for a minimum of ten minutes to corrected by packing adjustment shall not
stabilize the pressure. be cause for rejection.
A4.7.2 The helium lest temperature and A4.9 Ambient Low Pressure Seat Test
leaking gas temperature shall be measured
by test outlet tubing thennocouplc (sec A4.9. 1 Remove valve from test apparatus
Section A3.2) and recorded. After five and allow valve to wann up to ambient
minutes, the detected leakage rate shall be temperature.
recorded and then convened to an actual
leakage rale, as applicable, by mUltiplying A4.9.2 Perfonn a low pressure seat test
the dctected leakage rale by a correction using SO psi (5.5 bar) nitrogen gas. Repeat
factor in accordance with the Boyle-Charles test on opposite seat for bi-directiona l
rule. This calculation shall correct the valves.
measured leakage to standard conditions of
14.7 psig ( I.O1 bar) at 60°F (15.6°C). A4.9.3 Acceplable leakage rate shall be in
accordance with parent va lve testing
A4.7.3 The maximum allowable leakage slandard.
rales shall nOI exceed those listed in Table
AI. A4.10 Ambient Shell Test
A4.7.4 Repeal the test sequence as A4.10.1 With the valve half open, and
described in Sections A4.7 .1 through ports scalcd, pressurize thc valve with
A4.7.3 on each scat for bi-directional helium as required by ASME 816.34, or in
valves. accordance with thc parent valve standard.
12
MSS STANDARD PRA CTICE SP-l34
ANNEX A (continued)
Low Temperature Cryogenic Testing
SheUTest
Class
13
MSS STANDARD PRA CTICE SP-l34
ANNEX B
Referenced Standards and Applicable Dates
T his A nnex is an integral part o fthi s Standard Practice and is placed after the main text for convenie nce.
API
6D/1 80 143 13 2002 Petroleum and Natural Gas Industries Pipeline TTllnsportation Systems· Pipeline
Valves
600/180 10434 2004 Bolted Bonnet Steel Gatc Valves for Petroleum and Natural Gas Industries
602 1998 Compact Steel Gate Valves. Flanged Threaded , Welding and Extended Body Ends
603 2001 Corrosion Resistant Bolted Bonnet Gatc Valves-Flanged and Butt-Welding Ends
60S 2002 Metal Ball Valves-Flanged, Threaded and Welding End
609 1997 Butterfly Valves: Double Flanged, Lug and Wafer Type
-SP-96-200
MSS
1 (R 2(05) Guidel ines on Terminology for Valves and Fittings
MSS Manufacturers Standardi zation Society of the Valve and Fittings Industry, Inc.
127 Park SI. NE
Vienna, VA 22 J 80-4602
14
List of MSS Standard Practices
(Price List Available Upon Request)
""''''
Sf'.(I·2(101
SP·~2001
SP·25·1998
SP~2·2OO( ,- ~ . ;;;.• ••• '' '''. . . and Butt Weld EMIl
S P -43· 1GG1
SP...·2006
SP"S-2003
SP-51·2007
SP-53-1999
SP-s,4. 1999
SP·55-2006
SP·58-2002
SP·6().2OO<I •
SNIHOO3
SNI5-2OO<$
SP·67·2002a
SNI8· 1997
SP·6l}.2003
SP·7(l.2006
$P·71.2005
Sp·n· l 999
$P·75-2OO(
$P·77·1995
$P·78·2OO5a
$P·79·2OO(
$P·8O·2003
$P·8HOO6
$P·83·2006
$P·85·2002
$P·86·2002
$P·88·1993
SP·89·2003 and In$tallation Pfa<:tic es
SP·90·2000
SP·91·1992
and $uppoIts ,.
SP·92·1999
51'·93·1999 FOfginos for Valves. Ranges. and Fining. and 0It>e< Pipng Component.· Liquid Penetrant
SP·9(· I999
SP .gs..2006
SP.gs·2001
SP.g7·2006
SP..gs·2001
SP·9\l-lgg(
SP· l 00-2002
SP· l 01· 1989
SP· l (l2· 1989 "
SP· l (w·2003
SP· l (l5.1998
SP· l (l6.2003
SP· l (l6.2002
SP· l (l9.1997
SP·l 1(1.1996
SP·l11 ·2001
SP·112· 1999 -VIsual en:! Taclile ~ethod. ThI:I SP mul! be SOlI! wiII'l • lG-wrl""" . three
, Aotitb\ll Compar1OlOrI may be SOld """"lIllely.
SP·113·2001
$1'·114·2001
SP·115·2006
$1'·116·2003
SP·117·2006
$P·118·2007 , Flangeless. Threaded & WeIdI"Il elld,(Chemical & PetrcIaum ReI;""!)' Seovia!)
$P·119·2003 ,
$P·12Q·2OOE! Stem $teet Valves (Design Requlrel'nenta)
$P·12J.2006 for Ris;ng Stem Steel Valves
$P·122·2005
$P·123·1998
SP·124·2(101
SP·I25·2000
SP·I26·2OO(I
SP·127·2001
SP·I28·2006
51'·129·2003
SP· I 30-2003
SP · 13 1·2OO(
SP · I32·2OO(
SP· I33·2005
SP·13(·2OO6a
SP· l 35-2006
real'lirmecl withcuIt _,,"Ai ... changes
A Ietge number oil"'''' .... MSS Pr -(it t t _ been 41fio, ad boy .... AN$! Of ANSI Standan:lt.1l'AI "sl"", boy aCI .... In _ IU mlir rlain. *'gI&.uce
01 lIuh.. iIHlh'll ~ I """oallOn. the MSS 'IIIlIdaws lis $I ,"....<1 Pno 1M - in such MIS..,
Manufacturers Standardization Society of the Valve and Fittings Industry, Inc.
127 Park Street, N.E., Vienna, VA 22180-4620 (703) • 281-6613 Fax" (703) 281-6671
"""''''