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 4140-01-634-0330
NSN 5998-00-164-1686
NSN 6645-01-237-2568
NSN 6620-00-658-6588
NSN 6645-01-435-8356
NSN 5945-01-297-8575
NSN 5910-01-536-1406
NSN 5990-01-529-6347
NSN 5996-01-406-5785
NSN 5835-00-759-1109
NSN 6220-01-446-2527
NSN 5996-01-261-6758