2.1.6.2
Copper Tubing
ASTM B 88MASTM B 88, Type [K,] [L,] [M,] hard drawn, cast brass or wrought
copper fittings, Grade Sb5 solder joints.
2.1.6.3
PVC Pipe
ASTM D 1785, Schedule 40, [and Schedule 80 for sizes 200 mm 8 inch and
larger,] solvent weld joints.
2.1.7
Valves
Valves shall have rising stems and shall open when turned counterclockwise.
2.1.7.1
Gate Valves
a.
Bronze Gate Valves: MSS SP-80, 50 mm 2 inches and smaller, wedge
disc, inside screw type not less than Class 150. Use solder joint
ends with copper tubing.
b.
Steel Gate Valves: ASME B16.34, provide with open stem and yoke
type with solid wedge or flexible wedge disc and heat and
corrosion-resistant steel trim.
c.
Cast Iron Gate Valves: MSS SP-70, 65 mm 2 1/2 inches and larger,
open stem and yoke type with bronze trim.
2.1.7.2
Globe and Angle Valves
a.
Bronze Globe and Angle Valves: MSS SP-80, 50 mm 2 inches and
smaller, Class 200, except use Class 150 with solder ends for
copper tubing. Valves shall have renewable seat and discs except
solder end valves which shall have integral seats.
b.
Steel Globe and Angle Valves:
ASME B16.34, provide with heat and
corrosion-resistant trim.
c.
Cast Iron Globe and Angle Valves: MSS SP-85, 65 mm 2 1/2 inches
and larger, with bronze trim, tapped drains and brass plug.
2.1.7.3
Check Valves
a.
Bronze Check Valves: MSS SP-80, 50 mm 2 inches and smaller,
regrinding swing check type, Class 200.
b.
Steel Swing Check Valves:
[ASME B16.34], regrinding swing check
type, Class 200.
(1)
Swing check valves shall have bolted caps.
(2) Steel Lift check valves 50 mm 2 inches and smaller shall have
bolted caps. Lift check valves 65 mm 2 1/2 inches and larger
shall have pressure seal caps.
c.
Cast Iron Check Valves: ASME B16.34, 65 mm 2 1/2 inches and
larger, bronze trim, non-slam, eccentric disc type for centrifugal
pump discharge service.
SECTION 15185N
Page 15
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