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 5920-01-490-7329
NSN 6610-00-186-9180
NSN 6650-01-549-8478
NSN 7035-01-608-0693
NSN 6620-01-469-2352
NSN 5895-01-658-7039
NSN 6620-00-045-5771
NSN 6620-00-202-5122
NSN 6110-01-015-2866
NSN 5935-01-105-3008
NSN 6110-01-641-2922
NSN 6135-01-333-2540