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 5990-01-241-9472
NSN 5855-01-425-1330
NSN 6620-00-506-0112
NSN 6145-00-451-3534
NSN 5930-00-807-4905
NSN 6150-00-140-3943
NSN 6135-00-450-3528
NSN 6220-01-169-6478
NSN 5990-01-481-0164
NSN 5996-00-193-3459
NSN 6240-01-037-7108
NSN 2925-01-214-5333