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 6620-01-331-4001
NSN 6105-01-176-1478
NSN 5930-01-284-3188
NSN 6135-00-866-2311
NSN 6240-00-935-1358
NSN 6320-00-583-3105
NSN 6240-01-363-6152
NSN 5965-00-913-9545
NSN 5990-01-512-9129
NSN 5935-01-423-8653
NSN 5915-00-073-2618
NSN 5990-00-811-5227