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 5835-01-510-1873
NSN 6145-01-152-0628
NSN 6220-01-020-8703
NSN 6320-01-094-2634
NSN 6110-01-250-4523
NSN 5999-01-052-1646
NSN 6135-00-122-2420
NSN 5965-00-497-8820
NSN 5905-01-554-6740
NSN 6220-00-370-5447
NSN 4140-01-213-7438
NSN 5835-01-463-2334