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 5960-01-599-9821
NSN 5930-01-367-7810
NSN 5925-00-361-8836
NSN 4140-01-411-4764
NSN 5998-00-365-5464
NSN 5990-01-633-9503
NSN 5985-00-874-3946
NSN 5985-01-341-8628
NSN 5990-00-105-7831
NSN 6240-00-548-3992
NSN 5945-00-018-1270
NSN 5910-01-248-3241