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 6150-01-432-2584
NSN 2925-01-055-9705
NSN 6320-01-134-7267
NSN 6645-01-252-8870
NSN 5975-01-420-0404
NSN 5999-00-591-1682
NSN 6145-00-360-7760
NSN 5920-00-120-9347
NSN 4140-00-960-6573
NSN 5965-01-433-1974
NSN 5990-01-188-7309
NSN 5965-00-847-2865