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 6130-00-059-4642
NSN 4140-00-802-2968
NSN 5945-00-532-0921
NSN 6135-00-455-2425
NSN 5985-00-787-8277
NSN 6130-01-579-3433
NSN 6650-00-000-0164
NSN 6685-01-605-0114
NSN 4140-00-826-9031
NSN 6650-00-925-1274
NSN 5965-01-321-2907
NSN 5999-00-955-1171