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 6650-01-234-7012
NSN 5905-01-014-1717
NSN 4140-00-492-2468
NSN 5945-01-029-3871
NSN 4140-01-437-8253
NSN 5965-01-051-0126
NSN 5930-01-515-3954
NSN 5930-01-220-7304
NSN 5998-00-196-1912
NSN 5975-01-440-9080
NSN 5945-00-138-9618
NSN 6610-01-486-7954