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 5920-01-025-6989
NSN 5925-01-440-7571
NSN 5935-01-314-0705
NSN 6145-01-599-9856
NSN 5930-00-615-9530
NSN 2925-01-553-5132
NSN 6150-00-088-8827
NSN 6240-01-449-0746
NSN 5996-01-523-8746
NSN 5905-01-449-6778
NSN 6105-00-289-9993
NSN 5999-01-398-7291