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 5930-00-452-1316
NSN 6145-00-409-6844
NSN 6150-00-784-4237
NSN 7035-00-104-7613
NSN 5950-00-672-9879
NSN 6145-01-529-9831
NSN 7035-01-268-0933
NSN 5950-01-051-6081
NSN 5945-00-107-4895
NSN 5975-00-410-6172
NSN 6130-01-400-6123
NSN 6645-01-388-0391