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 6220-00-105-1075
NSN 5930-00-097-8683
NSN 5835-00-140-8646
NSN 5960-00-431-5263
NSN 6645-01-390-6520
NSN 6240-01-307-8236
NSN 6610-01-535-0310
NSN 5960-01-550-8038
NSN 5930-00-120-2554
NSN 2925-00-060-8292
NSN 5855-01-110-9564
NSN 6650-01-063-7714