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 5915-00-801-8860
NSN 5895-01-372-4536
NSN 5855-00-472-2055
NSN 6220-00-185-0679
NSN 6240-01-329-4978
NSN 5835-01-495-0595
NSN 5930-01-229-8990
NSN 5998-01-082-8449
NSN 4140-01-138-2228
NSN 6135-01-625-0765
NSN 5960-01-143-8622
NSN 5999-00-866-1112