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 5895-01-145-9033
NSN 6620-00-837-9484
NSN 5930-00-186-2442
NSN 5975-01-337-0638
NSN 4140-01-348-7633
NSN 6610-00-437-5681
NSN 5990-00-185-9586
NSN 6240-00-518-3541
NSN 2925-00-546-3129
NSN 5930-00-935-8659
NSN 5910-01-429-1059
NSN 6620-01-452-8418