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 5935-01-225-0628
NSN 4140-00-432-0330
NSN 5935-01-039-0605
NSN 6685-00-726-2538
NSN 5855-00-361-0167
NSN 5990-00-067-6791
NSN 6685-01-293-5714
NSN 6220-01-447-7841
NSN 5910-01-459-6264
NSN 6620-01-037-0275
NSN 6620-01-531-0415
NSN 4140-01-327-1688