An item 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 is specifically designed and/or cleaned for oxygen systems. See also valve, check; valve, stop-check.
NSN 2925-01-328-4394
NSN 5975-00-305-8740
NSN 5930-01-623-9202
NSN 5998-00-888-9887
NSN 5930-01-400-6126
NSN 7035-00-574-4223
NSN 6240-00-466-0703
NSN 2925-00-644-0028
NSN 6650-01-360-1882
NSN 5960-00-715-0190
NSN 5999-01-146-3020
NSN 5960-01-095-6873