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 5960-01-429-5897
NSN 5915-01-210-9132
NSN 6135-01-400-2947
NSN 6610-01-310-3313
NSN 6240-01-377-5503
NSN 6105-01-416-2249
NSN 6110-01-329-6387
NSN 6620-01-068-4498
NSN 6220-01-250-4149
NSN 5920-00-835-9298
NSN 5910-01-647-1300
NSN 4140-01-641-9197