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 6135-01-642-0733
NSN 4140-01-377-3471
NSN 5930-00-286-4669
NSN 6110-01-611-8258
NSN 6685-01-310-2212
NSN 6650-01-057-2596
NSN 6150-00-408-9600
NSN 5945-01-471-7540
NSN 6240-01-124-0037
NSN 4140-01-195-6489
NSN 5855-01-358-5253
NSN 5895-01-279-4449