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 6320-00-823-2015
NSN 6610-01-413-3912
NSN 5965-00-931-4136
NSN 5915-01-414-6433
NSN 6135-00-577-8429
NSN 4140-00-372-2947
NSN 5895-00-185-4543
NSN 5965-01-633-8849
NSN 5999-01-245-4716
NSN 2925-01-406-7837
NSN 6105-01-375-6934
NSN 5905-00-263-3453