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 5855-00-149-0766
NSN 5935-00-541-0722
NSN 5930-01-220-2670
NSN 5930-01-023-7293
NSN 5935-01-245-1503
NSN 5920-00-240-7957
NSN 5935-01-605-1069
NSN 5915-01-465-5801
NSN 6645-01-037-4735
NSN 5930-01-513-6725
NSN 5905-01-233-5094
NSN 6135-00-919-1117