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 5945-01-400-5928
NSN 6135-00-196-5267
NSN 5920-01-322-1968
NSN 5905-01-254-8084
NSN 5835-01-116-2369
NSN 5935-01-476-6871
NSN 5998-01-415-5163
NSN 5935-00-761-3235
NSN 6320-01-443-0974
NSN 4140-01-244-6737
NSN 5835-01-262-6561
NSN 5945-00-107-4304