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 6650-01-302-7684
NSN 6105-01-065-0341
NSN 5935-01-411-5281
NSN 6130-01-367-2201
NSN 5985-00-150-1029
NSN 5855-01-302-5493
NSN 6220-01-232-4744
NSN 6620-00-193-9503
NSN 5920-01-307-2651
NSN 2925-00-887-2073
NSN 6645-01-535-7136
NSN 6240-00-224-5323