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 5910-01-033-0013
NSN 6685-00-527-9489
NSN 6105-01-386-4038
NSN 5895-00-456-0830
NSN 5985-00-289-9862
NSN 6145-01-456-4133
NSN 5998-01-628-1070
NSN 6135-01-491-9360
NSN 6105-01-413-4172
NSN 6145-00-075-4620
NSN 6610-00-915-3215
NSN 6145-01-054-7463