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 5925-01-157-9142
NSN 5960-01-438-0245
NSN 5990-01-277-2118
NSN 6220-01-438-6410
NSN 6685-01-453-9951
NSN 6150-01-037-2670
NSN 5835-01-548-4955
NSN 6645-01-418-1657
NSN 5905-01-500-0831
NSN 5985-01-533-8113
NSN 5990-00-518-0684
NSN 5990-00-067-6791