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 5996-01-492-6274
NSN 6145-01-411-4757
NSN 5915-01-293-2365
NSN 5855-01-147-6024
NSN 5965-01-051-0126
NSN 5960-01-582-6167
NSN 5915-00-274-2282
NSN 6645-00-787-8813
NSN 6105-01-624-0679
NSN 5950-00-959-3285
NSN 5985-01-431-5813
NSN 5975-01-269-8750