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 6110-00-636-1234
NSN 6220-01-232-4439
NSN 5935-01-572-5947
NSN 5990-00-922-2449
NSN 6220-00-625-8554
NSN 5975-00-489-5308
NSN 4140-00-679-9512
NSN 5996-01-380-8105
NSN 6150-00-907-6882
NSN 5895-01-446-8656
NSN 5965-01-082-3757
NSN 2925-01-254-3068