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 6220-01-435-0198
NSN 7035-01-352-6235
NSN 5915-01-633-3301
NSN 6320-01-652-3806
NSN 6645-01-605-1485
NSN 6240-01-224-6941
NSN 6145-00-132-4800
NSN 5985-00-787-6720
NSN 4140-00-242-6465
NSN 5930-01-527-1049
NSN 6135-00-856-1343
NSN 5950-00-639-9675