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 5985-01-481-4770
NSN 5998-00-193-3989
NSN 5960-01-035-3901
NSN 5935-01-207-0938
NSN 4140-00-896-9602
NSN 2925-00-056-7112
NSN 6620-00-836-0399
NSN 6135-00-756-6149
NSN 5998-01-142-9787
NSN 5855-01-020-7982
NSN 5935-01-126-9573
NSN 5998-00-005-8781