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 6320-01-441-2438
NSN 2925-01-381-5307
NSN 5895-00-994-3105
NSN 6135-00-073-8939
NSN 6110-00-553-8816
NSN 5935-01-537-0270
NSN 6240-01-588-9068
NSN 6110-00-521-8932
NSN 6105-01-426-4522
NSN 6105-01-380-0647
NSN 6150-00-171-9455
NSN 6650-01-323-1354