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 5835-01-424-0054
NSN 5835-00-080-8213
NSN 5945-00-219-6129
NSN 6685-00-527-6545
NSN 5835-00-009-2862
NSN 5999-01-131-3972
NSN 5835-00-707-6266
NSN 6240-01-490-0980
NSN 4140-01-212-1433
NSN 5930-00-848-2279
NSN 6240-01-633-9357
NSN 6240-01-023-7720