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 5930-01-299-2711
NSN 6620-00-919-0163
NSN 5990-01-463-2279
NSN 2925-01-161-7440
NSN 2925-01-315-1714
NSN 4140-01-151-7049
NSN 6240-01-214-4805
NSN 6620-00-175-0663
NSN 5915-01-628-2968
NSN 6150-01-190-2796
NSN 6105-01-177-3726
NSN 5990-01-231-9608