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 5915-01-500-2147
NSN 6150-00-990-0462
NSN 5855-01-257-5338
NSN 5855-01-312-5160
NSN 5999-00-554-9966
NSN 5925-01-041-1191
NSN 5920-00-324-2315
NSN 2925-01-363-5978
NSN 5895-01-292-2393
NSN 5985-01-602-7684
NSN 5975-00-083-1433
NSN 6220-01-036-5331