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 6240-00-715-5118
NSN 6105-00-083-0520
NSN 6145-01-208-6876
NSN 5915-00-611-1207
NSN 5990-01-439-4643
NSN 6610-01-365-1896
NSN 5935-01-387-5868
NSN 7035-00-281-4082
NSN 5960-01-416-6187
NSN 5996-01-619-4966
NSN 5990-00-067-9102
NSN 5930-01-107-9009