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 5905-01-186-4929
NSN 4140-01-162-4497
NSN 6620-01-476-7355
NSN 5930-01-476-5076
NSN 5920-00-269-6178
NSN 6685-01-464-3128
NSN 5990-01-082-3807
NSN 5835-00-813-1724
NSN 6145-00-475-6909
NSN 6130-00-166-0626
NSN 5915-01-029-3740
NSN 5910-01-322-5493