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 5990-01-517-1909
NSN 6135-01-581-8163
NSN 5950-00-779-6831
NSN 5999-01-400-5933
NSN 5915-00-932-1403
NSN 6145-01-447-1535
NSN 5985-01-041-1873
NSN 6220-01-589-0058
NSN 5910-01-595-6592
NSN 5945-01-308-6555
NSN 5935-01-098-2448
NSN 6150-00-909-0221