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 6150-00-079-0795
NSN 6650-00-170-5095
NSN 6320-01-436-0513
NSN 5999-01-548-7952
NSN 6110-01-541-3827
NSN 5945-01-153-0268
NSN 5895-01-621-4815
NSN 6610-01-072-3447
NSN 6110-00-075-2426
NSN 5985-00-140-2947
NSN 5945-00-469-1113
NSN 6130-01-466-6534