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 5935-01-072-7448
NSN 5950-01-336-2364
NSN 5975-01-499-8730
NSN 5915-01-605-8327
NSN 5915-01-617-2540
NSN 5960-01-357-0683
NSN 6135-01-299-0778
NSN 5945-01-461-3895
NSN 5985-01-020-7203
NSN 5855-00-411-8688
NSN 6150-00-753-3950
NSN 6320-01-334-9840