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 5935-01-535-6589
NSN 5925-00-452-1270
NSN 5915-01-437-8858
NSN 5925-01-524-8058
NSN 6650-01-420-3155
NSN 5935-01-381-1149
NSN 2925-00-115-5857
NSN 5895-00-815-7905
NSN 6650-00-418-2129
NSN 6645-00-935-7046
NSN 7035-01-104-5446
NSN 6220-00-020-7666