covers. Joints shall be designed for a working pressure of [_____]
kPa (gage) psig and a temperature of [_____] degrees C F.
2.15.1.8
Pipe Hangers and Supports
MSS SP-58 and MSS SP-69, Type [______] or Type [_____] of the adjustable
type, except as specified or indicated otherwise. Suspended steam and
condensate piping shall have pipe hangers Type [_____] with insulation
protection saddles Type [_____]. Provide insulated piping, except steam
and condensate piping, with insulation protection shields Type 40. Provide
bronze or copper plated collars on uninsulated copper piping.
Support
rods shall be steel. Rods, hangers and supports shall be zinc plated,
except for uninsulated copper piping which shall be copper plated; cast
iron rollers, bases and saddles may be painted with two coats of heat
resisting aluminum paint in lieu of zinc plating. Axles for cast iron
rollers shall be stainless steel. Size hanger rods with a 150 percent
safety factor for a seismic design.
2.15.1.9
a.
Pressure and vacuum gages:
Conform to applicable requirements of
ASME B40.1.
b.
Indicating thermometers: MIL-T-19646 dial type.
Thermometer
shall include a separable immersion well.
2.15.1.10
Miscellaneous Pipeline Components
a.
Cold and hot water meters: FS GG-M-2802 for maximum flow of
[_____] L/s at 38 degrees C gpm at 100 degrees F and reduced flow
of up to [_____] L/s at 121 degrees C gpm at 250 degrees F.
b.
Air traps: Float controlled valves arranged to close properly
when water enters the traps. Air traps shall conform to
requirements for float operated steam traps (non-thermostatic), FS
A-A-60001, except that the valve mechanism shall be inverted so as
to be closed, not opened, by rising water.
c.
Steam traps: FS A-A-60001. Inverted bucket high pressure steam
traps designed for use at [_____] kPa (gage) psig at [_____]
degrees C F. Low pressure steam traps shall be float and
thermostatic type for pressures up to 103 kPa (gage) 15 psig.
Provide traps with separate strainers unless specified otherwise.
d.
Strainers: FS WW-S-2739 for Class [125] [250] with blow off
outlet. Construct strainers for Class 300 of cast carbon steel in
accordance with ASME B16.5 for minimum of 2068 kPa (gage) 300 psig
saturated steam pressure. Provide blow off outlet with pipe
nipple and gate valve.
e.
Steam exhaust heads:
FS A-A-50494 for atmospheric discharge of
exhaust steam.
2.15.1.11
Backflow Preventers
Reduced pressure principle type conforming to the applicable requirements
of [AWWA C510 and AWWA C511.] [Section 15400 PLUMBING SYSTEMS.]
SECTION 15502N
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