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 5950-01-383-4904
NSN 6110-01-260-2925
NSN 7035-01-522-0979
NSN 6610-00-084-1613
NSN 6150-00-083-5893
NSN 5945-00-150-3034
NSN 7035-00-521-6423
NSN 6320-01-556-2011
NSN 5985-00-331-2642
NSN 5998-01-129-5087
NSN 5950-01-433-6872
NSN 5935-01-528-7803