2.5.3.2
Plastic Fittings
Plastic fitting shall be chlorinated polyvinyl chloride (CPVC) as listed in
UL Fire Prot Dir for use in wet pipe sprinkler systems.
2.5.4
Pipe Hangers
Hangers shall be listed in UL Fire Prot Dir or FM P7825a and FM P7825b and
of the type suitable for the application, construction, and pipe type and
sized to be supported.
2.5.5
Valves
2.5.5.1
Control Valve and Gate Valve
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NOTE: A control valve is required for control of
each individual sprinkler riser. The type of such
valves should be either the OS&Y or wall type
indicator post. Where multiple risers are supplied
from a single water service, riser control valves of
the OS&Y type should be located in a valve room with
exterior access. For more guidance on arrangement
of sprinkler control valves, refer to NFPA 13,
Appendix A.
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Manually operated sprinkler control valve and gate valve shall be outside
stem and yoke (OS&Y) type and shall be listed in UL Bld Mat Dir or FM P7825a
and FM P7825b.
2.5.5.2
Check Valve
Check valve 50 mm 2 inches and larger shall be listed in UL Bld Mat Dir or
FM P7825a and FM P7825b. Check valves 100 mm 4 inches and larger shall be
of the swing type with flanged cast iron body and flanged inspection plate,
shall have a clear waterway and shall meet the requirements of MSS SP-71,
for Type 3 or 4.
2.5.5.3
Hose Valve
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NOTE: This specification does not include standpipe
systems covered by NFPA 14. However, in conjunction
with the project drawings, this specification can be
expanded to include combined sprinkler and standpipe
systems. Delete hose valve reducer when not
required.
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Valve shall comply with UL 668 and shall have a minimum rating of 2070 kPa
300 psi. Valve shall be non-rising stem, all bronze, 90 degree angle type,
with 65 mm 2-1/2 inch American National Standard Fire Hose Screw Thread
(NH) male outlet in accordance with NFPA 1963. Hose valve shall be
provided with 65 to 40 mm 2-1/2 to 1-1/2 inch reducer. Hose valves shall
be equipped with lugged cap with drip drain, cap gasket and chain. Valve
finish shall be [polished brass] [rough chrome plated] [polished chrome
plated].
SECTION 13930A
Page 20
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