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 5990-01-174-6851
NSN 5975-00-279-8693
NSN 5925-00-683-7877
NSN 5905-01-423-8857
NSN 6220-00-857-7565
NSN 6220-00-171-8638
NSN 7035-00-185-8683
NSN 5925-01-148-5404
NSN 4140-01-484-0232
NSN 5935-00-153-9970
NSN 5950-01-507-3732
NSN 7035-00-940-2486