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 5910-01-350-8099
NSN 5996-00-196-7258
NSN 6150-01-468-0296
NSN 5999-00-236-1869
NSN 6105-01-193-8876
NSN 5965-01-658-2624
NSN 6320-01-285-1922
NSN 6320-01-462-3555
NSN 6220-01-568-2671
NSN 5945-01-548-6314
NSN 6685-01-133-7819
NSN 7035-01-158-7673