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 6150-00-279-3183
NSN 5990-00-594-7291
NSN 6240-00-113-5239
NSN 5915-01-381-3087
NSN 6110-01-089-6260
NSN 5925-01-081-7253
NSN 5985-01-045-6024
NSN 5935-01-403-2844
NSN 6150-00-013-5613
NSN 6135-00-681-2702
NSN 5999-00-186-0058
NSN 5965-01-488-6695