sigh007 发表于 2012-3-22 15:55:15

MIL-V-7899B


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