HomeMy WebLinkAbout200100 VALVESTHE KENT
20 01 00 - 1
THE KENT Issue Date 05.09.18 VALVES
THE KENT
SECTION 20 01 00 - VALVES
PART 1 - GENERAL
1.01 RELATED SECTIONS:
A. Drawings, general provisions of the Contract, including General and Supplementary
Conditions, and Division-1 Specification Sections and Division 21, 22, and 23 Specification
Sections, apply to work of this Section.
B. This section applies to Division 21, 22 and 23 Specification Sections.
1.02 SUMMARY:
A. This Section includes general duty valves common to most mechanical piping systems. Special
purpose valves are specified in individual piping system specifications.
1.03 SUBMITTALS:
A. General: Submit the following in accordance with Conditions of Contract and Division 1
Specification Sections.
B. Product data, including body material, valve design, pressure and temperature classification,
end connection details, seat materials, trim material and arrangement, dimensions and
required clearance installation instructions.
1.04 QUALITY ASSURANCE:
A. American Society of Mechanical Engineers (ASME) Compliance: Comply with ASME B31.9 for
building services piping and ASME B31.1 for power piping.
B. Manufacturers Standardization Society of the Valve and Fittings industry (MSS) Compliance:
Comply with the various MSS Standard Practices referenced.
1.05 DELIVERY, STORAGE, AND HANDLING:
A. Preparation For Transport: Prepare valves for shipping as follows:
1. Ensure valves are dry and internally protected against rust and corrosion.
2. Protect valve ends against damage to threads, flange faces, and weld-end preps.
3. Set valves in best position for handling. Set globe and gate valves closed to prevent
rattling; set ball and plug valves open to minimize exposure of functional surfaces; set
butterfly valves closed or slightly open; and block swing check valves in either closed
or open position.
B. Storage: Use the following precautions during storage:
1. Do not remove valve end protectors unless necessary for inspection; then reinstall for
storage.
THE KENT
20 01 00 - 2
THE KENT Issue Date 05.09.18 VALVES
THE KENT
2. Protect valves from weather. Store valves indoors. Maintain valve temperature higher
than the ambient dew point temperature. If outdoor storage is necessary, support
valves off the ground or pavement in watertight enclosures.
C. Handling: Use a sling to handle valves whose size requires handling by crane or lift. Rig
valves to avoid damage to exposed valve parts. Do not use handwheel and stems as lifting or
rigging points.
PART 2 - PRODUCTS
2.01 MANUFACTURERS:
A. Available Manufacturers: Subject to compliance with requirements provide general duty valves
of one of the following:
1. Apollo
2. Crane
3. Hammond
4. Keystone
5. Milwaukee
6. Mueller Steam Specialty
7. Nibco
8. Red-White
9. Stockham
2.02 VALVE FEATURES, GENERAL:
A. Valve Design: Rising stem or rising outside screw and yoke stems.
1. Non-rising stem valves may be used where headroom prevents full extension of rising
stems.
B. Pressure and Temperature Ratings: As scheduled and required to suit system pressures and
temperatures.
C. Sizes: Same size as upstream pipe, unless otherwise indicated.
D. Operators: Provide the following special operator features:
1. Handwheel fastened to valve stem, for valves other than quarter turn.
2. Lever handles, on quarter-turn valves 6-inch and smaller, except for plug valves.
Provide plug valves with square heads; provide one wrench for every 10 plug valves.
E. Valves in insulated piping:
1. Gate valves: Provide 2” stem extension and with rising stem.
2. Butterfly valves: Provide 2” extended stem.
3. Ball valves: With extended operating handle of non-thermal-conductive material that
meets UL 2043 approved for inside air plenum, and protective sleeve that allows
operation of valve without breaking the vapor seal or disturbing insulation and memory
stops that are fully adjustable after insulation is applied.
F. Bypass and Drain Connections: Comply with MSS SP-45 bypass and drain connections.
THE KENT
20 01 00 - 3
THE KENT Issue Date 05.09.18 VALVES
THE KENT
G. End Connections: As indicated in the valve specifications.
1. Threads: Comply with ANSI B1.20.1.
2. Flanges: Comply with ANSI B16.1 for cast iron, ANSI B16.5 for steel, and ANSI
B16.24 for bronze valves.
3. Solder-Joint: Comply with ANSI B16.18.
4. Caution: Where soldered end connections are used, use solder having a melting point
below 840 deg F for gate, globe, and check valves; below 421 deg F for ball valves.
H. Valves and fittings being installed in a potable drinking water system shall comply with the Safe
Drinking Water Act as amended January 4th 2011 Section1417 that refers to the wetted
surface of pipe, fittings and fixtures in potable water systems that have a weighted average
lead content ≤0.25%.
I. Lead Free Silicon Bronze (ASTM Listed) valves shall be made with corrosion-resistant
materials. Manufacturer shall provide third party certification tested in accordance with EN ISO
6509 regarding dezincification corrosion resistance and stress corrosion cracking.
2.03 PLUG VALVES:
A. Plug Valves, 2-Inch and Smaller: Rated at 150 psi WOG; bronze body, with straight-away
pattern, square head, and threaded ends.
B. Plug Valves, 2-1/2-Inch and Larger: MSS SP-78; rated at 175 psi WOG; lubricated plug type,
with semisteel body, single gland, wrench operated, and flanged ends.
2.04 CHECK VALVES:
A. Swing Check Valves, 2-Inch and Smaller: MSS SP-80; Class 125, cast-bronze body and cap
conforming to ASTM B 62; with horizontal swing, Y-pattern, and bronze or “Teflon” disc; and
having threaded or solder ends. Provide valves capable of being reground while the valve
remains in the line. Provide Class 150 valves meeting the above specifications, with threaded
end connections, where system pressure requires or where Class 125 valves are not available.
B. Swing Check Valves, 2-1/2-Inch and Larger: MSS SP-71; Class 125 (Class 175 FM approved
for fire protection piping systems), cast iron body and bolted cap conforming to ASTM A 126,
Class B; horizontal swing, and bronze disc or cast-iron disc with bronze disc ring; and flanged
ends. Provide valves capable of being refitted while the valve remains in the line.
C. Wafer Check Valves: Class 250, cast-iron body; with replaceable bronze seat, and non-slam
design lapped and balanced twin bronze flappers and stainless steel trim and torsion spring.
Provide valves designed to open and close at approximately one-foot differential pressure.
D. Lift Check Valves, 2-Inch and Smaller: Class 125; cast-bronze body and cap conforming to
ASTM B 62; horizontal or angle pattern, lift-type valve, with stainless steel spring, bronze disc
holder with renewable "Teflon" disc, and threaded ends. Provide valves capable of being
refitted and ground while the valve remains in the line.
THE KENT
20 01 00 - 4
THE KENT Issue Date 05.09.18 VALVES
THE KENT
2.05 VALVES FOR POTABLE DRINKING WATER SYSTEMS:
A. Gate Valves
1. Gate Valves, 2-Inch and Smaller: MSS SP-139, CWP 200 PSIG, Body material to be
Silicon Bronze ASTM Listed and corrosion resistant, Stem shall be silicon bronze
ASTM B99 ALLOY C65100. Solid wedge, Silicon Bronze. Asbestos free packing.
Malleable iron hand wheel
2. Iron Gate Valve 2 ½” and larger: MSS SP-70 Type I Class 125 OS&Y. CWP 200 PSIG.
Body material shall be ASTM A536 ductile iron. Flanged end connection. Resilient
wedge. Asbestos free packing and gasket.
3. Iron Gate Valve 2 ½” and larger MSS SP-70 Type I class 125 NRS 200 PSIG. Body
material of ASTM A536 Ductile Iron. Flanged Ends. Resilient Wedge and asbestos
free packing and gaskets.
B. Ball Valves
1. Three Piece full port ball valve, MSS SP-110 and ASME A1124.14 with 600 psig. Body
design to be three-piece bronze with threaded body pack nut design (no threaded stem
designs allowed) with adjustable stem packing. Body material shall be silicon bronze
(ASTM Listed) corrosion resistant. Seats shall be PTFE or TFE. Stem and ball to be
Stainless Steel or Silicon bronze.
2. Two Piece full port ball valve, MSS SP-110 and ASME A1124.14 with 600 psig. Body
design to be two piece bronze with threaded body pack nut design (no threaded stem
designs allowed) with adjustable stem packing. Body material to be Silicon Bronze
(ASTM Listed) corrosion resistant. Seats to be PTFE or TFE. Stem and ball to be
Stainless Steel or Silicon bronze.
C. Butterfly Valve
1. Single flange butterfly valve MSS SP-67 Type I. NPS 12 and smaller 200 psig. Body
design shall be lug type; suitable for bidirectional dead-end service at rated pressure
without the use of downstream flange. Body material shall be ASTM A 536 Ductile iron.
Seat shall be EPDM, stem is a once piece stainless steel and a lead free aluminum
bronze disc.
2. Ductile iron Grooved end butterfly valve MSS SP-67 Type I. NPS 10 and smaller to be
300 psig and12 inch to be 200 psig. Body material shall be Polyamide coated ductile
iron ASTM A 395. Stem shall be two piece stainless steel with an EPDM-Encapsulated
Ductile iron disc and EPDM seal.
D. Check Valve
1. Silicon Bronze Ring check valve to be MSS SP-139 and rated 200 PSIG. Body design
to be Vertical or horizontal flow. Body material shall be Silicon Bronze (ASTM Listed),
corrosion resistant. TFE Disc.
2. Silicon Bronze Swing Check valve to be MSS SP-139 and rated 300 psig. Body design
to be horizontal or vertical (flow in upward direction) flow. Body material shall be Silicon
bronze (ASTM Listed), Corrosion resistant. Disc shall be PTFE or TFE.
3. Iron Swing Check Valve metal seat, class 125 MSS SP-71 Type I. 200 psig. Body
design to be clear or full waterway. Body material shall be ASTM A 126 gray iron.
Flanged end connection. Trim shall be stainless steel or silicon bronze (ASTM Listed),
corrosion resistant. Asbestos free gasket.
THE KENT
20 01 00 - 5
THE KENT Issue Date 05.09.18 VALVES
THE KENT
4. Iron Center guided check valve (pump discharge) with resilient seat. MSS SP-125 FCI
74-1 and MIL-V-18436F with a 200 psig rating. Body material shall be ASTM A 126
class B. Trim shall be silicon bronze (ASTM Listed), corrosion resistant. Style to be
Globe or wafer, spring loaded. Seat shall be Silicon bronze and flanged or wafer end
connection.
5. Iron Twin disc check valve with resilient seat class 125 NSF/ANSI 372. 200 psig. Body
material to be ASTM A 126 Class B. Trim to be Silicon bronze (ASTM Listed),
corrosion resistant. Style to be Wafer, spring loaded- plate double door. Wafer end
connection with silicon bronze seat.
6. Iron Grooved Check valve class 125 with resilient seat NSF/ANSI 372. 250 psig. Body
material to be Ductile iron ASTM 536. Trim to be silicon bronze (ASTM Listed),
corrosion resistant. Style to be twin disc, spring loaded with grooved ends and Buna N
seats.
PART 3 - EXECUTION
3.01 VALVE INSTALLATIONS:
A. General Application: Use gate, ball, and butterfly valves for shut-off duty; globe, ball, and
butterfly for throttling duty. Refer to piping system specification sections for specific valve
applications and arrangements.
B. Locate valves for easy access and provide separate support where necessary.
C. Install valves and unions for each fixture and item of equipment arranged to allow equipment
removal without system shutdown. Unions are not required on flanged devices.
D. Install three-valve bypass around each pressure-reducing valve using throttling-type valves.
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. Installation of Check Valves: Install for proper direction of flow as follows:
1. Swing Check Valves: Horizontal position with hinge pin level.
2. Wafer Check Valves: Horizontal or vertical position, between flanges.
3. Lift Check Valve: With stem upright and plumb.
H. When soldering use paste fluxes that are approved by the manufacturer for use with Lead Free
Alloys.
THE KENT
20 01 00 - 6
THE KENT Issue Date 05.09.18 VALVES
THE KENT
3.02 FIELD QUALITY CONTROL:
A. Tests: After piping systems have been tested and put into service, but before final adjusting
and balancing, inspect valves for leaks. Adjust or replace packing to stop leaks; replace valves
if leak persists.
3.03 ADJUSTING AND CLEANING:
A. Cleaning: Clean mill scale, grease, and protective coatings from exterior of valves and prepare
valves to receive finish painting or insulation.
END OF SECTION