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 5999-00-991-1882
NSN 6240-00-541-7032
NSN 6620-01-529-6665
NSN 5998-01-084-5103
NSN 6610-00-456-0485
NSN 6135-00-904-6780
NSN 6105-01-618-4343
NSN 2925-00-088-6790
NSN 5855-00-149-0766
NSN 2925-00-008-5485
NSN 5975-01-357-7019
NSN 6620-01-158-7309