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 6620-01-573-1709
NSN 6135-01-462-6040
NSN 5990-00-145-1187
NSN 5935-00-904-1824
NSN 5945-00-805-4234
NSN 5905-01-135-7438
NSN 5910-00-849-4360
NSN 5999-00-289-9878
NSN 5990-01-575-3275
NSN 5925-01-135-2025
NSN 6150-01-615-2505
NSN 5990-01-460-6390