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 6610-01-533-7458
NSN 6150-01-479-4359
NSN 5935-01-599-2295
NSN 5915-01-220-8830
NSN 6220-00-129-0820
NSN 5835-00-257-2852
NSN 5965-01-654-3565
NSN 5950-00-949-5987
NSN 5930-01-442-1759
NSN 6145-00-943-9549
NSN 6105-01-348-2236
NSN 2925-01-620-9673