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 5925-01-454-2874
NSN 5920-00-962-9874
NSN 6620-01-630-1721
NSN 6135-01-533-8196
NSN 5835-01-618-7621
NSN 7035-01-570-3553
NSN 5835-01-095-4400
NSN 6150-01-451-0105
NSN 6320-00-284-1524
NSN 5975-01-375-8653
NSN 6135-01-400-2947
NSN 5965-00-882-6949