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 2925-00-471-1128
NSN 5895-01-408-1906
NSN 5835-01-337-2793
NSN 6150-01-644-0172
NSN 6105-00-124-3448
NSN 4140-01-108-6092
NSN 6685-01-551-1293
NSN 5965-00-079-0928
NSN 5960-01-367-0981
NSN 5999-01-296-2563
NSN 6685-00-222-8216
NSN 6650-01-013-8804