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 5965-01-084-6921
NSN 6135-00-968-8594
NSN 5945-01-163-5198
NSN 5945-00-588-0865
NSN 4140-01-537-1257
NSN 5920-01-422-1866
NSN 6135-01-595-4779
NSN 2925-01-424-0235
NSN 6610-00-186-9180
NSN 5930-01-005-0198
NSN 6135-01-455-2233
NSN 5930-00-966-2451