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 5950-01-595-1957
NSN 5920-01-310-9281
NSN 5990-01-370-7912
NSN 6240-01-113-9996
NSN 5999-00-563-7696
NSN 5835-01-555-8963
NSN 5975-01-095-4697
NSN 5999-01-263-2566
NSN 6220-01-083-3092
NSN 5945-01-031-9709
NSN 5975-01-342-3514
NSN 5985-00-269-5388