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 5998-01-278-2650
NSN 5965-01-507-3576
NSN 5935-01-008-3540
NSN 5835-01-483-7825
NSN 5999-01-153-9905
NSN 5990-00-155-2306
NSN 5975-00-099-9312
NSN 5910-01-093-4719
NSN 5975-01-417-6799
NSN 6620-00-877-3266
NSN 6645-00-079-1430
NSN 6130-00-781-2897