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 2925-01-298-2674
NSN 5996-01-372-1813
NSN 5950-01-035-6237
NSN 5915-01-607-0360
NSN 5965-01-392-6511
NSN 5965-00-716-7078
NSN 6320-01-036-2598
NSN 5945-01-467-2242
NSN 6105-01-014-5444
NSN 5960-01-063-6846
NSN 6130-01-263-2457
NSN 6240-01-160-7430