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 5925-00-219-2908
NSN 5965-00-177-1607
NSN 7035-00-215-3272
NSN 6320-00-593-0379
NSN 5990-01-050-7535
NSN 5945-00-944-8076
NSN 5990-00-373-9787
NSN 6145-01-607-8648
NSN 5960-01-187-7400
NSN 5905-01-408-4572
NSN 6645-00-547-4388
NSN 6685-00-684-7891