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 6130-01-428-9106
NSN 5945-00-610-6103
NSN 4140-00-360-2457
NSN 5905-00-080-1217
NSN 4140-01-580-6652
NSN 6220-01-470-6573
NSN 5945-00-176-4750
NSN 6220-01-025-8551
NSN 6130-01-192-2499
NSN 5925-00-764-8349
NSN 5910-01-484-9015
NSN 7035-01-364-0286