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 5999-01-185-6438
NSN 6130-01-344-6864
NSN 6650-01-235-0981
NSN 6645-01-522-1512
NSN 5985-00-231-0922
NSN 5985-00-974-3077
NSN 6620-00-888-3179
NSN 5895-01-209-6678
NSN 2925-01-214-5333
NSN 6110-01-633-9660
NSN 5985-00-879-9680
NSN 5975-01-351-8391