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 5985-01-187-3389
NSN 4140-01-080-5114
NSN 7035-01-256-9598
NSN 6135-01-090-5365
NSN 5935-01-094-3744
NSN 5945-01-583-6813
NSN 6130-01-435-9241
NSN 5975-01-467-3005
NSN 5935-01-461-9371
NSN 6610-01-318-6713
NSN 6620-01-553-6458
NSN 6220-00-068-1000