MIL-V-7899, MILITARY SPECIFICATION: VALVE, CHECK, AIRCRAFT FUEL SYSTEM (30 JUN 1952) [S/S BY MIL-DTL-7899]

MIL-V-7899, MILITARY SPECIFICATION: VALVE, CHECK, AIRCRAFT FUEL SYSTEM (30 JUN 1952) [S/S BY MIL-DTL-7899]., This specification covers low-pressure check valves suitable for use with hydrocarbon fuels, fuel vapors, and air.