being adjusted to specified flow and pressure, and suitable for intended
service. Provide pilot valve for dome loaded type if required for proper
operation.
2.10.6.4
Safety Valves
ASME BPVC SEC VIII D1 and ASME BPVC SEC IX, Code stamped safety valve,
bronze body with bronze trim, for unfired pressure vessels, threaded or
flanged connection; factory set and sealed.
2.10.7
Pressure Gages
ASME B40.1, Accuracy Grade A, for air, with steel or brass case, and
nonshatterable safety glass, and a pressure blowout back to prevent glass
from flying out in case of an explosion. Gages shall have a 90 mm 3 1/2
inch minimum diameter dial and a dial range of approximately twice working
pressure.
2.10.8
Pipe Hangers and Supports
MSS SP-58, MSS SP-69, and ASME B31.1, except as specified or indicated
otherwise. Provide zinc plated pipe hangers and supports. Provide tubing
supports of U-shaped steel bolts and nuts firmly secured to adequately
support structures such as walls, columns, floors, or brackets. Clips
shall fit closely around piping but shall have sufficient clearance to
permit longitudinal movement of piping during normal expansion and
contraction. Provide supports at valves, fittings, branch lines, outlets,
changes in direction, equipment, and accessories.
2.10.9
Strainers
FS WW-S-2739, Class 250, Style Y, simplex type, with 20-mesh Monel or
stainless steel screen.
2.10.10
Traps
FS A-A-60001, to drain water and other liquids from system. Type of traps,
as indicated, and rated working pressure not less than system operating
pressure.
2.10.11
Flexible Connections
Vibration isolation, wire braid reinforced corrugated metal hose type,
line-sized, with bronze end connections, suitable for pressure indicated.
Length as recommended by manufacturer but not less than [457] [_____] mm
[18] [_____] inches.
2.10.12
Tetrafluoroethylene Tape
MIL-T-27730 for screw-jointed pipe.
2.11
SLEEVES
2.11.1
Floor Slabs, Roof Slabs, and Outside Walls Above and Below Grade
Galvanized-steel pipe having an inside diameter at least 15 mm 1/2 inch
larger than the outside diameter of the pipe passing through it. Provide
sufficient sleeve length to extend completely through floors, roofs, and
walls, so that sleeve ends are flush with finished surfaces except that
SECTION 15212N
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