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 5895-01-362-7085
NSN 6145-00-661-0191
NSN 5835-01-053-6209
NSN 5985-00-238-6131
NSN 5905-01-123-1397
NSN 6220-01-521-7978
NSN 5915-01-034-9461
NSN 4140-01-338-5984
NSN 5975-01-614-9003
NSN 6240-00-583-9863
NSN 5910-01-467-8948
NSN 5895-01-532-1604