A valve 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 may be inline or cartridge (manifold) design.
NSN 5895-01-488-4551
NSN 5960-01-544-1273
NSN 5990-01-365-3453
NSN 5925-01-536-1604
NSN 6240-01-327-4596
NSN 5990-00-150-6979
NSN 4140-01-575-0968
NSN 6645-01-347-0450
NSN 5985-01-359-9182
NSN 6645-00-498-6869
NSN 5835-00-409-5666
NSN 7035-00-574-4223