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 5920-01-581-3703
NSN 5985-01-385-4647
NSN 6145-01-529-4535
NSN 5965-01-606-1784
NSN 5950-01-524-2749
NSN 5996-00-692-6679
NSN 5990-01-254-2936
NSN 5985-00-937-6719
NSN 5945-01-253-1921
NSN 5945-01-352-5852
NSN 6685-01-071-7848
NSN 6685-00-244-4974