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 5935-01-520-6330
NSN 5915-00-269-4463
NSN 7035-00-870-0290
NSN 6110-01-554-7406
NSN 6130-01-143-9319
NSN 5855-01-656-6808
NSN 6135-00-898-6996
NSN 6145-01-307-7954
NSN 5835-00-170-5238
NSN 6150-01-240-9315
NSN 6645-01-400-1137
NSN 6645-01-048-4671