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 5935-00-138-3373
NSN 5835-01-143-9143
NSN 6110-01-445-7377
NSN 6650-00-995-8015
NSN 6650-01-212-3964
NSN 6135-00-702-2772
NSN 5855-01-418-6303
NSN 5915-01-156-4226
NSN 5905-00-735-1778
NSN 5960-01-388-1988
NSN 5950-00-278-1201
NSN 5960-01-091-0668