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 5996-01-153-2359
NSN 5910-01-247-2133
NSN 6220-01-634-0660
NSN 6105-00-728-8612
NSN 6685-01-035-5614
NSN 4140-01-012-2460
NSN 7035-00-205-1932
NSN 6650-01-197-0587
NSN 5998-01-414-5359
NSN 5998-01-545-2196
NSN 6135-01-601-7197
NSN 6610-01-458-3119