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 5920-00-164-1147
NSN 5945-01-069-3363
NSN 5935-01-400-1700
NSN 6685-01-651-8056
NSN 5998-01-628-4303
NSN 5985-01-512-2298
NSN 6220-00-450-9973
NSN 4140-01-145-9891
NSN 6610-01-376-3993
NSN 5925-01-507-3020
NSN 5998-01-519-8354
NSN 5950-01-171-8592