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 2925-01-141-7563
NSN 6105-00-158-9381
NSN 5835-01-414-3258
NSN 5835-01-412-0344
NSN 6145-01-487-3138
NSN 5990-01-471-0494
NSN 6110-00-912-4043
NSN 4140-01-169-9592
NSN 6240-00-915-1705
NSN 5999-00-402-4517
NSN 5895-01-357-6149
NSN 5935-01-089-9468