All valves are set for their rated flow and should not be changed. Parts are not sold separately. Valves are customized to slip inside Schedule 160 pipe or pipe size with larger inside diameter than schedule 160 pipe. Stainless steel valves should be used for more highly corrosive liquids or where excessive moisture is present. All carbon steel and stainless steel valves have balls and pins made of stainless steel.
All threads are American Standard taper pipe threads.
Listed under Reexamination Service of Underwriters' Laboratories, Inc. for propane, butane and ammonia. The Metal Goods Manufacturing Company is listed in U.S. Coast Guard Equipment List CG-190, as an acceptable manufacturer of valves and fittings. The purchaser should inform the manufacturer of the exact service for which the item is intended.