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 5930-01-376-5052
NSN 5855-00-055-1694
NSN 6645-01-037-7725
NSN 5930-01-416-8278
NSN 6320-00-194-4252
NSN 6150-01-305-8868
NSN 6135-01-151-2705
NSN 5996-01-247-9748
NSN 6110-00-539-0422
NSN 5930-01-202-8626
NSN 5910-01-536-9965
NSN 6130-00-655-3084