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 5990-01-392-5682
NSN 6150-01-254-7977
NSN 5990-01-465-9235
NSN 5975-01-004-0955
NSN 6105-00-365-4519
NSN 6610-00-510-2906
NSN 6220-01-249-3884
NSN 5930-01-459-7373
NSN 6610-00-232-9485
NSN 5835-01-507-0731
NSN 6135-00-613-1068
NSN 5835-01-654-4570