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 5915-01-129-9038
NSN 5985-01-363-1091
NSN 5855-01-485-4327
NSN 6685-01-452-2989
NSN 6645-00-641-3202
NSN 6105-00-287-8971
NSN 6145-01-391-7763
NSN 5960-00-543-1956
NSN 6220-00-673-5287
NSN 6105-01-302-1253
NSN 5835-01-381-2683
NSN 6645-01-017-7593