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 6240-00-740-8901
NSN 2925-01-305-1370
NSN 6620-01-643-5531
NSN 5835-00-315-3797
NSN 5975-01-587-9395
NSN 6145-01-158-8408
NSN 5999-01-232-0980
NSN 5895-01-461-8287
NSN 6105-00-136-9158
NSN 5920-01-264-2695
NSN 5935-01-062-5717
NSN 6620-00-838-6954