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 6135-01-545-5519
NSN 6150-01-226-2767
NSN 6135-00-519-1325
NSN 5935-01-261-9041
NSN 6620-01-633-8443
NSN 5990-00-548-6163
NSN 5960-00-340-3120
NSN 6110-00-141-1966
NSN 6105-00-171-6521
NSN 5895-00-684-6879
NSN 5930-01-235-1135
NSN 5975-01-545-5198