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 5990-01-223-9414
NSN 5950-00-463-2441
NSN 5998-01-111-5172
NSN 6145-01-195-0094
NSN 5990-00-212-4316
NSN 5835-00-123-5175
NSN 6110-00-960-7341
NSN 7035-01-582-4034
NSN 6220-00-959-8030
NSN 5930-01-451-4738
NSN 6620-01-104-5758
NSN 5915-01-227-6881