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 5998-00-938-3940
NSN 6220-01-438-2642
NSN 5855-00-930-9478
NSN 5990-01-333-6583
NSN 2925-00-246-3077
NSN 7035-01-549-6765
NSN 5910-01-462-0401
NSN 5990-01-054-3332
NSN 5835-00-102-2373
NSN 6110-01-583-9255
NSN 5998-01-457-7660
NSN 6110-00-003-6102