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 5985-01-023-1515
NSN 5915-01-229-5592
NSN 5990-01-264-9759
NSN 5895-00-219-9992
NSN 5915-01-227-6881
NSN 5945-00-707-3384
NSN 5930-01-189-1675
NSN 4140-01-314-8251
NSN 5960-01-059-6300
NSN 5935-00-410-7680
NSN 6105-01-468-2090
NSN 6105-01-611-9920