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 5930-01-234-7995
NSN 5910-00-359-5616
NSN 7035-00-585-2113
NSN 5910-01-432-2214
NSN 6620-01-319-9804
NSN 5996-01-139-2843
NSN 6685-01-161-6653
NSN 5920-01-491-5550
NSN 5990-00-351-5479
NSN 5990-01-386-3040
NSN 6105-01-372-6119
NSN 6650-00-372-0669