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 5998-00-143-8942
NSN 6220-00-605-0404
NSN 5990-01-463-2279
NSN 5990-01-485-8874
NSN 5996-01-030-1387
NSN 6610-01-287-9814
NSN 6645-01-329-8151
NSN 6610-01-593-4643
NSN 6650-00-420-3593
NSN 6685-01-203-4381
NSN 5960-01-089-8155
NSN 6650-01-616-3403