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 5930-01-113-1347
NSN 5935-01-534-9283
NSN 6145-01-139-2158
NSN 5975-01-063-8236
NSN 5915-00-619-3987
NSN 6320-01-088-1109
NSN 6240-00-722-0268
NSN 6650-00-087-1569
NSN 5925-01-210-5750
NSN 5935-00-619-5543
NSN 6645-01-451-0260
NSN 5950-01-414-3797