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 6620-01-612-9030
NSN 5905-00-776-9721
NSN 5950-01-218-4877
NSN 5915-01-557-9524
NSN 5998-01-412-0928
NSN 5930-01-527-0163
NSN 4140-01-382-6831
NSN 5996-01-068-2886
NSN 5935-01-070-1733
NSN 7035-00-968-4848
NSN 5895-01-202-1288
NSN 5996-01-052-8215