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 5930-01-222-6665
NSN 5975-00-018-7143
NSN 5990-01-443-2931
NSN 6130-00-520-5884
NSN 6685-00-186-9190
NSN 6685-00-885-8927
NSN 5960-01-244-6610
NSN 4140-01-389-2170
NSN 6110-01-291-7039
NSN 6620-01-135-0090
NSN 6110-01-246-5391
NSN 5945-01-461-3060