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 5915-01-284-8905
NSN 5990-01-063-9459
NSN 6150-00-682-4865
NSN 5905-00-104-8357
NSN 6150-01-283-9002
NSN 6130-01-213-6229
NSN 5855-01-599-9814
NSN 6130-01-168-8507
NSN 5965-01-386-2988
NSN 6135-01-643-5809
NSN 7035-00-490-0485
NSN 6145-00-066-5304