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 6320-00-360-1301
NSN 5960-01-514-5433
NSN 5835-00-279-1594
NSN 5975-01-156-7838
NSN 6105-01-418-1654
NSN 5920-01-441-0362
NSN 6645-01-422-5686
NSN 6220-01-035-4350
NSN 5945-00-316-5300
NSN 6220-01-365-4090
NSN 5930-01-309-0615
NSN 5975-01-628-2687