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 6650-00-217-6292
NSN 5950-01-298-7301
NSN 5935-01-109-1982
NSN 5835-01-049-5290
NSN 5999-01-350-2505
NSN 6620-01-476-7355
NSN 6105-00-776-2205
NSN 6150-01-385-8423
NSN 5950-01-260-9447
NSN 6150-01-646-2578
NSN 5935-00-717-1093
NSN 5920-00-950-9761