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 4140-00-152-7092
NSN 6150-00-434-0118
NSN 6135-01-373-2518
NSN 5965-01-216-1994
NSN 5910-01-351-5534
NSN 5945-01-176-7270
NSN 5905-01-221-8634
NSN 5996-00-103-2716
NSN 6620-01-605-2590
NSN 4140-01-552-1394
NSN 6645-01-039-0058
NSN 6135-01-255-9129