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 5920-01-063-6499
NSN 5945-01-179-1457
NSN 6220-01-512-5258
NSN 5930-00-498-3682
NSN 5975-01-607-3779
NSN 5895-01-016-6311
NSN 6130-00-966-7667
NSN 6240-01-332-6892
NSN 7035-01-287-9817
NSN 2925-01-314-9682
NSN 6105-00-481-3401
NSN 6145-00-669-6795