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 6135-01-415-1163
NSN 5950-01-147-7467
NSN 6150-01-050-9362
NSN 6220-01-242-9901
NSN 4140-01-101-5844
NSN 6240-01-187-7758
NSN 6645-00-192-1152
NSN 6240-00-084-0176
NSN 6620-01-624-3933
NSN 5920-01-313-7600
NSN 4140-01-384-3998
NSN 6150-01-317-3639