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 6320-01-212-8749
NSN 5920-01-232-8497
NSN 5998-01-514-2492
NSN 5895-00-158-4343
NSN 5945-00-567-5240
NSN 5998-01-381-6349
NSN 5835-01-051-7584
NSN 6240-01-092-3509
NSN 5990-00-905-6472
NSN 5990-00-140-1159
NSN 5999-01-217-2035
NSN 5925-01-073-7034