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 5915-00-288-0071
NSN 5915-01-644-7770
NSN 6320-01-111-0960
NSN 6150-00-265-7799
NSN 4140-01-030-7486
NSN 6610-01-070-3660
NSN 6220-00-211-6146
NSN 5935-01-089-6638
NSN 5915-00-147-0351
NSN 5915-01-391-3143
NSN 5905-01-088-7416
NSN 5935-01-045-7674