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 5935-01-284-5017
NSN 5915-00-581-5523
NSN 6620-01-175-5922
NSN 6685-01-360-5779
NSN 5998-01-349-5627
NSN 6320-00-261-9136
NSN 5905-00-509-4329
NSN 6240-01-497-7901
NSN 5950-00-090-4090
NSN 5945-00-259-5737
NSN 5965-01-109-2917
NSN 5895-01-435-8660