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 6135-01-304-6423
NSN 6645-01-023-8020
NSN 6220-00-737-0869
NSN 6105-00-858-3888
NSN 5996-01-436-8548
NSN 6620-01-087-4361
NSN 6135-01-633-8502
NSN 6240-01-376-7963
NSN 5915-00-291-3736
NSN 5975-01-444-1703
NSN 5835-01-396-0640
NSN 5999-01-450-5489