A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.
NSN 5905-01-416-4251
NSN 5935-00-869-3074
NSN 5975-01-262-0681
NSN 5975-01-484-2484
NSN 5950-00-203-5621
NSN 5975-01-055-9756
NSN 5965-00-303-9701
NSN 6320-01-294-7161
NSN 6650-00-857-2260
NSN 5855-01-602-3437
NSN 5855-00-058-1293
NSN 6320-00-925-0558