Oxygen clean per mil-i-52211
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.
Classification: Check valves of materials other than copper, iron or steel
NSN 5925-00-205-2767
NSN 5985-01-575-4073
NSN 6105-00-899-3812
NSN 2925-00-452-6403
NSN 6150-01-644-0172
NSN 7035-00-756-4374
NSN 5925-01-070-6605
NSN 5999-00-203-1202
NSN 5925-00-938-7370
NSN 6240-00-803-2777
NSN 5945-01-075-1997
NSN 6150-00-146-6790