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 5925-00-064-7543
NSN 2925-00-008-5485
NSN 6105-00-479-8991
NSN 6130-00-299-6920
NSN 6150-00-223-9761
NSN 5930-00-051-2263
NSN 5965-01-322-8136
NSN 5855-00-411-8688
NSN 5960-00-597-2680
NSN 6320-01-352-8084
NSN 6650-00-729-6745
NSN 5975-01-197-4683