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 4140-01-101-4454
NSN 5935-01-248-3386
NSN 5985-00-941-4645
NSN 5999-00-039-6551
NSN 6685-00-539-8060
NSN 5990-01-605-4769
NSN 2925-01-027-1293
NSN 6105-01-136-7783
NSN 5985-01-400-3667
NSN 6650-01-101-9023
NSN 6150-00-701-7880
NSN 6240-01-505-7956