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 5935-01-178-0303
NSN 6220-01-452-4384
NSN 5960-01-632-6576
NSN 5945-01-543-2801
NSN 6135-00-816-9052
NSN 5999-01-227-2526
NSN 5835-01-608-8868
NSN 6145-01-048-6682
NSN 6130-01-135-5810
NSN 5950-01-528-7982
NSN 6130-01-529-6232
NSN 6150-01-384-3068