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 6220-00-119-4190
NSN 4140-01-100-6160
NSN 5998-01-288-6291
NSN 5925-01-197-9899
NSN 5930-01-509-0531
NSN 5935-00-318-2181
NSN 6240-01-263-5343
NSN 6645-00-405-1077
NSN 2925-00-629-7641
NSN 6220-01-413-1046
NSN 6220-01-183-7279
NSN 5998-01-061-4860