d.
Fuel Oil Pipe: ASTM A 53 or ASTM A 106, seamless black steel
pipe, Grade A or B.
e.
Treated Water, Hot Water Heating, High Temperature Water, Drains
(Other Than Sanitary), and Overflow Pipe: ASTM A 53, black,
welded or seamless steel up to a maximum pressure of 1724 kpa
(gage) 250 psig or ASTM A 106, Grade A or B.
f.
Gas Pipe and Compressed Air Pipe: ASTM A 53 welded or seamless
pipe up to a maximum pressure of 1724 kPa (gage) 250 psigor ASTM A
106, Grade A or B.
g.
Instrument Air Pipe: ASTM B 88M ASTM B 88 hard copper tubing,
Type K or L; except in a corrosive atmosphere or outside pipe
shall be copper tubing, Type K or L, with ASTM D 1047 PVC
jacketing.
h.
Steam Tracer Pipe: As an option, the, contractor may provide ASTM
B 88M ASTM B 88, Type K, copper tubing for steam up 103 kPa (gage)
15 psig.
2.10.2
Chlorinated Polyvinyl Chloride (CPVC)
Chlorinated polyvinyl chloride (CPVC) and other plastic tubing and fittings
shall not be used in the steam heating plant, unless otherwise specified in
Section 15400 PLUMBING SYSTEMS. Systems for potable water, sanitary drains
and storm drains are also covered in Section 15400 PLUMBING SYSTEMS.
2.10.3
Fittings
2.10.3.1
Fittings for Steel Pipe
a.
Sizes 6 to 50 mm 1/8 to 2 inches: ASME B16.3malleable iron,
screwed end fittings, for working pressures not greater than 2068
kPa (gage) 300 psig at temperatures not greater than 232 degrees C
450 degrees F or ASME B16.11forged steel.
b.
Sizes 6 to 50 mm 1/8 to 2 inches:
ASME B16.11 steel, socket
welded end fittings.
c.
Sizes 6 to 65 mm 1/8 to 2 1/2 inches:
ASME B16.9steel, butt
welding fittings.
d.
Sizes 65 to 600 mm 2 1/2 to 24 inches:
ASME B16.5forged steel,
flanged fittings.
2.10.3.2
Welded Outlets and Welding Saddles
Make branch connections of 45 and 90 degrees either with ASME B16.9 or ASME
B16.28 forged steel welded outlet fittings or welding saddles. Welding
outlets and saddles shall not be smaller than two pipe sizes less than the
main pipe sizes.
2.10.3.3
Fittings For Copper Tubing
ANSI B16.18 cast bronze solder joint or ASME B16.22 wrought copper solder
joint. For instrument air, fittings may be ASME B16.26 compression joint
type.
SECTION 15511N
Page 70
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