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 6130-00-707-5931
NSN 5996-00-519-6882
NSN 2925-00-078-0525
NSN 5999-01-390-7198
NSN 6110-01-367-2165
NSN 5999-01-522-8296
NSN 6240-00-827-0889
NSN 4140-00-905-6570
NSN 4140-01-233-5806
NSN 5950-01-148-7882
NSN 5920-01-436-8925
NSN 6650-01-633-0333