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 5915-01-561-4255
NSN 5999-01-338-9654
NSN 5925-01-358-0309
NSN 6240-00-542-6657
NSN 2925-00-633-7223
NSN 5855-01-247-9666
NSN 5930-01-043-4742
NSN 6110-01-344-6885
NSN 6135-01-108-6057
NSN 5950-00-761-0096
NSN 5915-00-100-5239
NSN 6645-01-199-0062