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 6650-01-104-6139
NSN 5910-01-483-6282
NSN 6610-01-519-7297
NSN 6610-01-246-9933
NSN 6620-01-015-2470
NSN 6240-00-426-1972
NSN 6105-01-615-4935
NSN 5910-01-158-8854
NSN 5915-01-619-5740
NSN 6220-01-419-5882
NSN 6240-01-603-0143
NSN 6110-01-252-6454