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 6610-01-141-7014
NSN 6145-01-089-8616
NSN 6220-00-904-1613
NSN 5895-01-176-4095
NSN 7035-01-011-3760
NSN 5895-00-936-1036
NSN 5999-01-275-8881
NSN 5960-01-462-1864
NSN 6650-01-591-2481
NSN 6110-01-158-6138
NSN 5960-01-495-0859
NSN 6145-01-229-0326