2-Way Normally Closed ASCO Gas Safety Shutoff Gas Shutoff Solenoid Valve. Aluminum Body, Buna N Elastomer Seals. 1-1/2" Pipe Size, 1-5/8" Orifice, Cv=35. Pressure in PSI: Min: 0, Max: Air/Inert G, Water=5, Gas Capacity: 1,887,200 BTU/Hr. Enclosure: General Purpose: NEMA 1. with Junction Box.