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 5960-01-284-4118
NSN 5930-00-187-5146
NSN 6220-00-269-8396
NSN 6110-01-599-0713
NSN 6320-01-166-3602
NSN 6110-01-371-1978
NSN 6645-01-633-1852
NSN 5960-00-400-2222
NSN 6320-01-116-3980
NSN 5910-00-081-9173
NSN 5935-01-221-2475
NSN 6105-00-803-5158