pressure involved. Type M copper should only be
specified for drain piping.
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ASTM A 53/A 53M electric resistance welded or seamless Schedule [_____]
steel pipe [or ASTM B 88M ASTM B 88 Type [_____] hard drawn Copper tubing].
2.1.2
Fittings
Provide fittings compatible with the pipe being provided and shall conform
to the following requirements.
2.1.2.1
Steel or Malleable Iron Pipe
Sizes 3 to 50 mm 1/8 to 2 inches. ASME B16.11 steel socket welding or
screwed type or ASME B16.3 for screwed type malleable iron fittings.
2.1.2.2
Steel, Cast Iron, or Bronze
Sizes 65 mm 2 1/2 inches and above. Steel fitting butt welding type ASME
B16.9 or ASME B16.5 flanged type. Cast iron fittings flanged type ASME
B16.1. Bronze fittings up to 200 mm 8 inch size flanged type ANSI B16.24.
2.1.2.3
Fittings for Copper Tubing
ANSI B16.18 cast bronze solder joint type or ASME B16.22wrought copper
solder joint type. Fittings may be flared or compression joint type.
2.1.3
Mechanical Pipe Coupling System
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NOTE: Mechanical couplings may be used for
retrofits and other locations where welding is
prohibited or where working space is extremely
limited. Consideration of the aggressiveness of the
water/water treatment on the seals must be
considered before using the mechanical coupling
system.
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Couplings may be provided for water temperatures not to exceed 93 degrees C
200 degrees F. Couplings shall be self centering and shall engage and lock
in place the grooved or shouldered ends of pipe and pipe fittings in a
positive watertight couple. Couplings shall be designed to permit some
angular pipe deflection, contraction, and expansion. Coupling clamp shall
be ductile iron conforming to ASTM A 536, Grade 65-45-12. Gasket shall be
molded rubber conforming to ASTM D 2000, the "line call-out" number shall
be suitable for a water temperature of 110 degrees C 230 degrees F.
Coupling nuts and bolts shall be steel conforming to ASTM A 183. Fittings
shall be grooved malleable iron conforming to ASTM A 47/A 47M, Grade 32510
or ductile iron conforming to ASTM A 536, Grade 65-45-12 or malleable iron
conforming to ASTM A 47/A 47M, Grade 32510. Mechanical couplings and
fittings shall be of the same manufacturer. Before assembling couplings,
coat pipe ends and outsides of gaskets with lubricant approved by the
coupling manufacturer to facilitate installation.
2.1.3.1
Groove and Check Valves
Grooved end, dual disc, spring loaded, non-slam check valves with Type 316
SECTION 15185N
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