MIL-V-7899B, MILITARY SPECIFICATION: VALVE, CHECK, AIRCRAFT FUEL SYSTEM (20 SEP 1974) [S/S BY MIL-DTL-7899]
MIL-V-7899B, MILITARY SPECIFICATION: VALVE, CHECK, AIRCRAFT FUEL SYSTEM (20 SEP 1974) [S/S BY MIL-DTL-7899]., This specification covers low-pressure check valves suitable for use with hydrocarbon fuels, fuel vapors, and air.