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 5935-00-244-0935
NSN 5925-00-078-9566
NSN 5960-01-377-1907
NSN 5915-00-045-9071
NSN 6610-01-008-7564
NSN 5935-01-315-0240
NSN 6645-01-551-6893
NSN 5920-00-074-4654
NSN 7035-01-643-8304
NSN 6105-01-430-5401
NSN 4140-01-010-0615
NSN 7035-01-518-6710