A valve that controls flow by a circular disk, or a pair of semicircular disks, attached to a common spindle or lever turning on a diametral axis.
NSN 5985-01-245-3065
NSN 5930-01-611-1977
NSN 6620-00-186-8220
NSN 5930-00-156-0954
NSN 6110-01-459-9022
NSN 6240-00-272-8601
NSN 5996-01-313-7963
NSN 6240-01-096-4572
NSN 5945-00-856-2927
NSN 5920-00-615-3915
NSN 6145-00-669-6795
NSN 6130-01-226-4206