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 5990-01-395-4194
NSN 6240-01-475-3155
NSN 6650-01-305-4567
NSN 6220-01-447-7841
NSN 6135-01-429-9029
NSN 5975-00-636-4910
NSN 6110-00-454-2074
NSN 6135-00-448-5642
NSN 5905-00-952-2990
NSN 6110-00-097-8122
NSN 5965-00-823-8623
NSN 7035-00-531-9925