Buffalo Wild Wings

2.2 VALVES
2. In Ceiling Air Plenum:
who has successfully completed the manufacturer’s training. System
must be installed with all of the flexible gas piping manufacturer’s valves,
regulators, fittings, etc. The contractor must obtain specific local
inspectors approval prior to installing the system.
a. Schedule 40 black steel with standard weld butt fittings.
b. Type L seamless soft copper and copper fittings. Copper piping shall not
be used if the gas contains more than an average of 0.3 grains of
hydrogen sulfide per 100 standard cubic of gas.
c. All welded or brazed connections in air plenum ceilings and concealed
spaces. Use no valves, threads, unions or connectors in these locations.
Concealed gas piping in solid partitions shall be inside a Schedule 40
black steel pipe sleeve capped at both ends and vented outside the
building.
3. Exterior Underground:
a. PE (polyethylene) plastic and shall be marked “gas” and “ASTM D 2513”
and shall be used with factory assembled steel riser.
b. Type L seamless soft copper, ASTM B 88 shall be used with factory
assembled steel riser. Copper piping shall not be used if the gas
contains more than an average of 0.3 grains of hydrogen sulfide per 100
standard cubic of gas.
4. Exterior Aboveground:
a. Schedule 40 black steel with threaded fittings, ASTM A 53.
A. Acceptable Valve Manufacturers:
1. Apollo, Powell, or approved equal, Crane, Jenkins, Watts, Mueller, (Powell)
numbers shown).
B. Gate Valves —Domestic Water Piping
2 inches and Smaller: All bronze; #1 842, solder end.
1. 4” and Larger: I .B.B.T; #1793, flanged.
C. Check Valves —Domestic Water Piping
1. 2-1/2 inches and Smaller: All bronze; #1 825, solder end.
D. Ball Valves —Domestic Water Piping (use in lieu of gate valves only)
1. All bronze, Watts #B-6000.
E. Globe Valves —Domestic Water Piping
1. 2-1/2 inches and Smaller—All Bronze; #1873, solder end.
06/25/09 PIPING MATERIALS AND METHODS
15150-2