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 6130-00-121-9051
NSN 5920-00-378-1395
NSN 5935-01-314-9060
NSN 6240-00-904-2122
NSN 6610-00-244-2816
NSN 5915-00-340-9803
NSN 2925-00-719-4658
NSN 5905-01-604-6244
NSN 5910-00-421-1007
NSN 5835-01-174-4276
NSN 6130-01-539-5316
NSN 5895-00-922-1209