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 6685-01-104-1782
NSN 6650-01-166-5025
NSN 6150-01-519-8060
NSN 6145-00-725-7163
NSN 5925-00-110-9266
NSN 5996-01-261-6758
NSN 5925-01-089-6970
NSN 6685-01-070-1821
NSN 5915-01-483-6709
NSN 5920-00-933-5439
NSN 5935-01-185-2373
NSN 5996-01-009-8855