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 5935-01-059-1221
NSN 6135-01-046-6803
NSN 6110-01-467-0459
NSN 7035-00-865-9105
NSN 5895-01-078-6395
NSN 5855-00-004-0904
NSN 6610-01-632-3364
NSN 6130-01-439-5456
NSN 6685-01-117-5846
NSN 2925-00-103-6822
NSN 5999-00-004-3791
NSN 4140-01-463-3434