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 5998-01-551-4675
NSN 6145-00-487-8973
NSN 6135-01-462-1135
NSN 6135-01-614-8028
NSN 5915-01-290-4107
NSN 7035-00-445-9657
NSN 7035-00-238-3662
NSN 5895-00-222-5043
NSN 4140-01-398-3985
NSN 6240-00-239-0159
NSN 6645-01-428-3576
NSN 5960-00-188-8648