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 6610-00-553-5103
NSN 6240-00-361-1421
NSN 5998-00-199-7851
NSN 6220-00-827-0227
NSN 5910-01-462-9137
NSN 5925-01-064-9123
NSN 5895-00-518-1593
NSN 6145-01-541-4302
NSN 6135-00-583-3966
NSN 5965-00-726-3168
NSN 5915-01-337-0293
NSN 6135-00-209-6918