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 5905-00-833-9034
NSN 5975-01-634-0678
NSN 6220-01-607-0748
NSN 6220-00-116-0163
NSN 6320-01-215-1133
NSN 5999-01-046-1800
NSN 2925-00-075-2714
NSN 5999-00-277-4257
NSN 5999-01-174-2256
NSN 5990-01-400-2195
NSN 5950-01-642-0148
NSN 5835-00-451-2093