Valve size 4.000 in.
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 6685-01-160-7313
NSN 6650-01-058-0049
NSN 6105-00-210-8441
NSN 6150-01-030-8740
NSN 6320-01-161-6640
NSN 5905-00-319-4689
NSN 2925-00-999-8967
NSN 6240-00-684-8181
NSN 5945-00-446-9290
NSN 5996-00-288-1829
NSN 5905-00-195-6824
NSN 5935-00-096-5994