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 5985-01-519-0247
NSN 5920-01-123-8148
NSN 6135-01-534-3007
NSN 5920-00-398-0766
NSN 5996-00-260-8291
NSN 6320-00-174-1362
NSN 6320-00-036-3688
NSN 5996-01-626-3598
NSN 6320-01-338-6006
NSN 5855-01-529-6369
NSN 5965-01-019-5406
NSN 6150-01-420-2578