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 6240-01-454-1603
NSN 5985-00-083-3100
NSN 5855-00-548-4742
NSN 5999-01-474-6224
NSN 6220-01-545-1397
NSN 6685-00-099-9025
NSN 5990-01-254-2936
NSN 5935-01-555-7362
NSN 5855-01-056-9607
NSN 6135-00-405-1989
NSN 5935-01-467-5733
NSN 5998-00-171-8941