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 5985-00-629-6901
NSN 5965-01-646-1122
NSN 6650-00-250-5183
NSN 2925-01-426-3410
NSN 5999-01-495-1725
NSN 6650-01-151-4217
NSN 6320-01-253-1028
NSN 5855-00-610-4052
NSN 5935-01-345-7203
NSN 5985-00-526-3469
NSN 5925-00-647-3469
NSN 6105-01-294-5513