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 5915-00-578-1917
NSN 6135-01-151-2705
NSN 5960-01-251-3912
NSN 6650-00-590-9073
NSN 5855-01-301-0158
NSN 5920-00-100-2582
NSN 6610-01-369-4212
NSN 6645-00-816-1707
NSN 2925-00-816-8765
NSN 5905-01-611-9864
NSN 5915-01-386-1084
NSN 6135-01-051-7836