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 5999-00-263-7874
NSN 5998-01-332-1658
NSN 5935-01-204-1057
NSN 5990-01-419-0661
NSN 6645-01-563-6563
NSN 6130-00-528-7838
NSN 5905-00-935-6954
NSN 6220-01-647-9134
NSN 5835-00-222-3956
NSN 5905-01-350-4524
NSN 4140-01-367-5824
NSN 6620-00-583-2687