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 5835-00-564-0057
NSN 5965-01-436-0390
NSN 6645-01-383-8139
NSN 5925-00-145-9065
NSN 6130-01-239-6642
NSN 5975-00-789-6209
NSN 5945-01-406-4352
NSN 5990-00-548-6163
NSN 6620-01-359-3920
NSN 5930-00-951-9732
NSN 5996-01-378-6438
NSN 5985-01-160-7898