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 5965-01-440-9039
NSN 6610-01-336-2787
NSN 6130-01-443-2006
NSN 5935-01-486-4287
NSN 6105-01-206-1959
NSN 6620-00-807-6954
NSN 6130-01-013-7651
NSN 5965-01-462-6801
NSN 6645-01-434-7444
NSN 6610-00-565-9758
NSN 5855-00-156-5489
NSN 4140-01-530-6700