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 5905-00-443-2799
NSN 6135-00-112-8635
NSN 6105-01-253-5287
NSN 5935-00-220-1771
NSN 6645-01-620-4837
NSN 6150-01-088-1081
NSN 6150-00-214-1461
NSN 5920-00-890-8999
NSN 6135-00-422-3967
NSN 5999-01-429-7757
NSN 5835-00-233-6327
NSN 6645-01-526-8782