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 5975-01-290-1618
NSN 5990-01-336-3976
NSN 6135-00-635-9187
NSN 5965-01-111-6031
NSN 6610-00-946-6146
NSN 6610-01-025-4718
NSN 5990-01-571-3593
NSN 5930-01-550-9794
NSN 6610-01-136-7836
NSN 5965-01-266-7968
NSN 5965-01-507-3576
NSN 6130-01-038-2459