b'C.S.A. CERTIFIED BRASS PRECISION NEEDLE VALVES FOR LP GAS TO 350 P.S.I.These instrumentation valves with knurled brass hand wheels, are used with air, LP gases(such as torch applications) and liquids. Each valve is machined from brass bar stock andpressure tested at the factory. The stem is stainless steel with a fine thread for controlling flowand the O-ring packing assures leak proof, trouble free service.PIPE WELDINGFemale STANDARDTo ToMale Male PipePART No.Flow Pipe Welding 850-A 1/8 PART No. Pipe Flow Thread850-B 1/4 853-L 1/4 9/16-18 L.H.850-BRF 1/4 854-L 1/4 9/16-18 L.H.(REVERSE FLOW) (REVERSE FLOW)PIPE PIPEMale FemaleTo To FMale FemalePART No. Pipe PART No. Pipe851-A 1/8 852-A 1/8851-B 1/4 852-B 1/4CERTIFICATIONS CAN EXPIRE. THEY SHOULD BE CONFIRMED WITH THE APPROVING AGENCIES.BRASS PRECISION NEEDLE VALVESPIPEFemaleToMalePART No. Flow Pipe850-BRF-SP 1/4(REVERSE FLOW)171'