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 5920-01-319-0263
NSN 5895-01-550-5062
NSN 5965-01-527-5166
NSN 4140-01-634-0330
NSN 6135-01-353-3802
NSN 6135-00-057-2005
NSN 5950-01-123-4684
NSN 5965-01-431-7377
NSN 5930-01-057-8276
NSN 5990-00-068-4324
NSN 5950-00-180-3234
NSN 5975-00-817-4476