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 6150-01-190-4067
NSN 5998-01-329-4864
NSN 5999-01-546-3697
NSN 6240-01-062-1684
NSN 5945-01-172-0967
NSN 6650-01-553-0721
NSN 5990-01-059-0947
NSN 5910-01-350-8099
NSN 6685-01-610-0872
NSN 5998-00-438-1952
NSN 5990-01-193-0487
NSN 5960-01-614-8005