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 5950-00-937-2405
NSN 5920-01-051-0090
NSN 5985-01-316-0537
NSN 5935-00-092-8160
NSN 4140-01-317-6441
NSN 6650-01-392-6076
NSN 6220-01-092-5177
NSN 6620-00-176-5722
NSN 5895-00-605-8696
NSN 5915-00-153-4805
NSN 5925-01-212-0118
NSN 6130-01-467-2820