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 5855-00-151-3853
NSN 5855-00-106-1640
NSN 4140-00-027-5150
NSN 6240-00-079-0112
NSN 6135-01-548-1423
NSN 6135-01-599-7563
NSN 5999-01-442-4750
NSN 5905-01-411-4775
NSN 5855-01-389-8884
NSN 6610-00-868-2412
NSN 5996-01-339-1789
NSN 6150-01-371-3023