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 6150-00-872-4634
NSN 6150-01-202-8957
NSN 5945-01-443-5357
NSN 5996-01-298-8325
NSN 6620-01-517-0014
NSN 6110-01-623-7269
NSN 5915-01-286-2834
NSN 6620-01-029-3171
NSN 5999-01-227-7687
NSN 6240-01-645-0849
NSN 6610-00-945-6782
NSN 6685-01-460-9550