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 4140-01-455-5170
NSN 6150-01-460-5922
NSN 6685-01-010-6854
NSN 5999-01-427-3702
NSN 6620-00-500-0041
NSN 6320-00-456-0836
NSN 6220-01-151-0835
NSN 5960-00-287-4982
NSN 5835-00-922-1263
NSN 6150-00-329-5720
NSN 6220-01-550-2373
NSN 6145-00-873-4808