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SECTION 15100 - VALVES

PART 1 - GENERAL

0.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including Conditions of Contract and
Division 1 Specification Sections, apply to this Section.

0.2 SUMMARY

A. This Section includes general duty valves common to several mechanical piping
systems.

B. Related Sections: The following Sections contain requirements that relate to this
Section:

1. Special purpose valves are specified in Division 15 piping system Sections.

2. Valve tags and charts are specified in Division 15 Section "Mechanical
Identification."

0.3 SUBMITTALS

A. Product Data for each valve type. Include body material, valve design, pressure and
temperature classification, end connection details, seating materials, trim material and
arrangement, dimensions and required clearances, and installation instructions. Include
list indicating valve and its application.

B. Listing of Product Installation shall be submitted for valve assemblies indicating at least
5 installed units, similar to those proposed for use, that have been in successful service
for a minimum of 5 years.

C. Maintenance data for valves to include in the operation and maintenance manual
specified in Division 1. Include detailed manufacturer's instructions on adjusting,
servicing, disassembling, and repairing.

0.4 QUALITY ASSURANCE

A. Single-Source Responsibility: Comply with the requirements specified in Division 1

Section "Product Requirements", under "Source Limitations" Paragraph.

B. ASME Compliance: Comply with ASME B31.9 for building services piping and
ASME B31.1 for power piping.

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C. MSS Compliance: Comply with the various MSS Standard Practice documents
referenced.

0.5 DELIVERY, STORAGE, AND HANDLING

A. Prepare valves for shipping as follows:

1. Protect internal parts against rust and corrosion.

2. Protect threads, flange faces, grooves, and weld ends.
3. Set globe and gate valves closed to prevent rattling.
4. Set ball and plug valves open to minimize exposure of functional surfaces.
5. Set butterfly valves closed or slightly open.
6. Block check valves in either closed or open position.

B. Use the following precautions during storage:

1. Maintain valve end protection.

2. Store indoors and maintain valve temperature higher than ambient dew-point
temperature. If outdoor storage is necessary, store valves off the ground in
watertight enclosures.

C. Use a sling to handle large valves. Rig to avoid damage to exposed parts. Do not use
handwheels and stems as lifting or rigging points.

PART 2 - PRODUCTS

0.1 BASIC, COMMON FEATURES

A. Design: Rising stem or rising outside screw and yoke stems, except as specified below.

1. Nonrising stem valves may be used only where headroom prevents full extension
of rising stems.

B. Internal and external parts of all cast-iron and ductile-iron valves installed under ground
and or exposed to outdoors shall be factory coated with 300 micron fusion bonded
epoxy coating.

1. Valves installed above ground and indoors: apply coating for internal and
external parts.

C. Pressure and Temperature Ratings: As indicated in the "Application Schedule" of

Part 3 of this Section and as required to suit system pressures and temperatures.

D. Sizes: Same size as upstream pipe, unless otherwise indicated.

E. Operators: Use specified operators and handwheels, except provide the following
special operator features:

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1. Handwheels: For valves other than quarter turn.

2. Lever Handles: For quarter-turn valves DN150 and smaller, except for plug
valves, which shall have square heads. Furnish the Employer with 1 wrench for
every 10 plug valves.
3. Chain-Wheel Operators: For valves DN100 and larger, installed 2400 mm or
higher above finished floor elevation.
4. Gear-Drive Operators: For quarter-turn valves DN200 and larger.

F. Extended Stems: Where insulation is indicated or specified, provide extended stems

arranged to receive insulation.

G. Bypass and Drain Connections: Comply with MSS SP-45 bypass and drain
connections.

H. Threads: ASME B1.20.1.

I. Flanges: ASME B16.1 for cast iron, ASME B16.5 for steel, and ASME B16.24 for
bronze valves.

J. Solder Joint: ASME B16.18.

1. Caution: Where soldered end connections are used, use solder having a melting
point below 450 deg. C for gate, globe, and check valves; below 216 deg. C for
ball valves.

K. All valves shall be in an accessible location. If not, suitable means of access shall be
provided.

0.2 GATE VALVES

A. Gate Valves, DN50 and Smaller: MSS SP-80; Class 125, 1380 kPa cold working
pressure (CWP), or Class 150, 2070 kPa CWP; cast-bronze body and bonnet, or EPDM
lined solid-bronze wedge, copper-silicon alloy rising stem, mechanical packing,
threaded connections; and with aluminum or malleable-iron handwheel.

B. Gate Valves, DN65 and Larger: MSS SP-70, Class 125, 1380 kPa CWP, ASTM A 126
cast-iron body and bonnet, EDPM lined solid cast-iron wedge, brass-alloy stem, outside
screw and yoke, mechanical packing, flanged end connections; and with cast-iron
handwheel.

0.3 BALL VALVES

A. Ball Valves, DN100 and Smaller: MSS SP-110, Class 150, 4140 kPa CWP,
ASTM B 584 bronze body and bonnet, 2-piece construction; chrome-plated brass ball,
standard port for DN15 valves and smaller and conventional port for DN20 valves and
larger; blowout proof; bronze or brass stem; Teflon seats and seals; threaded
connections:

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1. Operator: Steel handwheel.

2. Operator: Vinyl-covered steel lever handle.
3. Operator: Lever operators with lock.
4. Stem Extension: For valves installed in insulated piping.
5. Memory Stop: For operator handles.

0.4 PLUG VALVES

A. Plug Valves: MSS SP-78, 1200 kPa CWP, ASTM A 126 cast-iron body and bonnet,
EDPM lined cast-iron plug, mechanical packing, flanged or grooved end connections:

1. Operator: Lever.
2. Operator: Square head with 1 wrench for every 10 valves.
3. Operator: Worm and gear with handwheel, sizes DN150 and larger.
4. Operator: Worm and gear with chain wheel, sizes DN150 and larger, 2400 mm
or higher above floor.

0.5 GLOBE VALVES

A. Globe Valves, DN50 and Smaller: MSS SP-80; Class 125, 1380 kPa CWP, or
Class 150, 2070 kPa CWP; cast-bronze body and screwed bonnet, rubber, bronze,
silicon bronze-alloy stem, mechanical packing threaded connections; and with
aluminum or malleable-iron handwheel.

B. Globe Valves, DN65 and Larger: MSS SP-85, Class 125, 1380-kPa CWP,

ASTM A 126 cast-iron body and bolted bonnet with bronze fittings, renewable bronze
seat and disc, brass-alloy stem, outside screw and yoke, mechanical packing, flanged
end connections; and with cast-iron handwheel.

0.6 BUTTERFLY VALVES

A. Butterfly Valves: MSS SP-67, Class 125 1380-kPa CWP, 1035- kPa maximum
pressure differential, ASTM A 126 cast-iron body and bonnet, extended neck, stainless-
steel stem, field-replaceable EPDM sleeve and stem seals, flanged, lug, or grooved
style:

1. Disc Type: Aluminum bronze, EPDM lined.

2. Disc Type: Elastomer-coated ductile iron, EPDM lined.
3. Disc Type: Epoxy-coated ductile iron, EPDM lined.
4. Operator for Sizes DN50 to DN150: Standard lever handle, with latch lock.
5. Operator for Sizes DN200 to DN600: Gear operator with position indicator.
6. Operator for Sizes DN200 and Larger, 2400 mm or Higher above Floor: Chain-
wheel operator.

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0.7 CHECK VALVES

A. Swing Check Valves, DN50 and Smaller: MSS SP-80; Class 125, 1380 kPa CWP, or
Class 150, 2070 kPa CWP; horizontal swing, Y-pattern, cast-bronze body and cap,
rotating bronze disc with rubber seat or composition seat, threaded connections.

B. Swing Check Valves, DN65 to DN 150: MSS SP-71, Class 125, 1380 kPa CWP,
ASTM A 126 cast-iron body and bolted cap, horizontal-swing, weighted non-slam,
silent type, bronze disc, flanged or grooved end connections.

C. Air Cushioned Check Valves, DN 150 and Larger: Cast iron, ASTM A126, AWWA
C508 having integral flanges, stainless steel shaft, lever and weight, air cushioned side
mounted cylinder, cast iron disk, double clevis connected to ductile iron disc arm,
flanged or grooved connection.

D. Lift Check Valves: Class 125, bronze body and cap (main components), horizontal or
vertical pattern, lift-type, non-slam, silent type, bronze disc EPFM rubber disc with
stainless-steel holder threaded connections.

PART 3 - EXECUTION

0.1 EXAMINATION

A. Examine piping system for compliance with requirements for installation tolerances and
other conditions affecting performance of valves. Do not proceed with installation until
unsatisfactory conditions have been corrected.

B. Examine valve interior for cleanliness, freedom from foreign matter, and corrosion.
Remove special packing materials, such as blocks, used to prevent disc movement
during shipping and handling.

C. Operate valves from fully open to fully closed positions. Examine guides and seats
made accessible by such operation.

D. Examine threads on valve and mating pipe for form and cleanliness.

E. Examine mating flange faces for conditions that might cause leakage. Check bolting
for proper size, length, and material. Check gasket material for proper size, material
composition suitable for service, and freedom from defects and damage.

F. Do not attempt to repair defective valves; replace with new valves.

0.2 INSTALLATION

A. Install valves as indicated, according to manufacturer's written instructions.

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B. Piping installation requirements are specified in other Division 15 Sections. Drawings

indicate the general arrangement of piping, fittings, and specialties.

C. Install valves with unions or flanges at each piece of equipment arranged to allow
servicing, maintenance, and equipment removal without system shutdown.

D. Locate valves for easy access and provide separate support where necessary.

E. Install valves in horizontal piping with stem at or above the center of the pipe.

F. Install valves in a position to allow full stem movement.

G. For chain-wheel operators, extend chains to 1500 mm above finished floor elevation.

H. Installation of Check Valves: Install for proper direction of flow as follows:

1. Swing Check Valves: Horizontal position with hinge pin level.

2. Lift Check Valve: With stem upright and plumb.

0.3 THREADED CONNECTIONS

A. Note the internal length of threads in valve ends and proximity of valve internal seat or
wall to determine how far pipe should be threaded into valve.

B. Align threads at point of assembly.

C. Apply appropriate tape or thread compound to the external pipe threads, except where
dry seal threading is specified.

D. Assemble joint, wrench tight. Wrench on valve shall be on the valve end into which the
pipe is being threaded.

0.4 FLANGED CONNECTIONS

A. Align flange surfaces parallel.

B. Assemble joints by sequencing bolt tightening to make initial contact of flanges and
gaskets as flat and parallel as possible. Use suitable lubricants on bolt threads. Tighten
bolts gradually and uniformly with a torque wrench.

C. For dead-end service, butterfly valves require flanges both upstream and downstream
for proper shutoff and retention.

0.5 VALVE END SELECTION

A. Select valves with the following ends or types of pipe/tube connections:

1. Steel Pipe Sizes, DN50 and Smaller: Threaded or grooved end.

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2. Steel Pipe Sizes, DN65 and Larger: Grooved end or flanged.

0.6 APPLICATION SCHEDULE

A. General Application: Use gate, ball, and butterfly valves for shutoff duty; globe and
ball valves for throttling duty. Refer to piping system Specification Sections for
specific valve applications and arrangements. Refer to the Drawings also for the
requirement of the type of the valve.

B. Domestic Water Systems: Use the following valve types:

1. Gate Valves: Class 125, bronze or cast-iron body to suit piping system.

2. Ball Valves: Class 150, 4140-kPa CWP, with stem extension.
3. Plug Valves: Neoprene-faced plug, mechanical packing EPDM lined.
4. Globe Valves: Class 125, bronze or cast-iron body to suit piping system, and
bronze disc.
5. Butterfly Valves: Class 125, aluminum bronze EPDM lined. EPDM or Buna N
sleeve and stem seals.
6. Bronze Swing Check: Class 125, with rubber seat, EPDM lined plates.
7. Check Valves: Class 125, swing type as indicated, EPDM lined plates.

C. Chilled-Water Systems: Use the following valve types:

1. Gate Valves: Class 125, cast-iron body.

2. Ball Valves: Class 150, 4140 kPa CWP, with stem extension and memory stop.
3. Plug Valves: EPDM packing.
4. Globe Valves: Class 125, bronze body with bronze disc; or Class 125, cast-iron
body.
5. Butterfly Valves: Class 125, aluminum bronze, or elastomer-coated ductile iron
disc; EPDM sleeve and stem seals.
6. Check Valves: Class 125, bronze body swing check with rubber seat; Class 125,
cast-iron body swing check; Class 125, or Class 125, cast-iron body lift check.

D. Condenser Water Systems: Check the suitability of valves to ozone treatment when
used for condenser water. Use the following valve types:

1. Gate Valves: Class 125, bronze body; or Class 125, cast-iron body.

2. Ball Valves: Class 150, 4140 kPa CWP, with memory stop.
3. Plug Valves: Buna N packing.
4. Globe Valves: Class 125, bronze body with bronze or teflon disc; or Class 125,
cast-iron body.
5. Butterfly Valves: Class125, aluminum bronze, epoxy-coated ductile iron disc;
EPDM sleeve and stem seals.
6. Check Valves: Class 125, bronze body swing check with rubber seat; Class 125,
cast-iron body swing check; Class 125, or Class 125, cast-iron body lift check.

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0.7 ADJUSTING

A. Adjust or replace packing after piping systems have been tested and put into service,
but before final adjusting and balancing. Replace valves if leak persists.

END OF SECTION

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