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 5910-01-345-4157
NSN 5975-01-658-7409
NSN 6135-01-010-0891
NSN 6685-01-384-3143
NSN 5925-01-442-6487
NSN 5895-00-620-0518
NSN 6620-00-104-6937
NSN 5999-01-339-7251
NSN 6620-01-483-1138
NSN 5925-01-509-5850
NSN 4140-01-197-0406
NSN 5895-00-465-4899