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 5920-01-433-1668
NSN 5835-01-314-2781
NSN 6220-01-461-2910
NSN 6105-01-016-9189
NSN 6105-00-799-3871
NSN 5960-00-869-7404
NSN 5960-01-399-4327
NSN 6220-00-643-4045
NSN 4140-00-764-1005
NSN 5920-01-342-2227
NSN 5999-00-196-7369
NSN 6145-01-493-5833