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 5960-01-474-4843
NSN 5920-00-433-1854
NSN 5905-01-578-6517
NSN 5930-00-916-6850
NSN 5920-00-538-7915
NSN 5910-00-153-6911
NSN 6240-01-543-3930
NSN 5945-01-182-8121
NSN 6620-00-071-3895
NSN 6220-01-056-5169
NSN 6620-01-654-9436
NSN 5935-01-040-1626