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 5960-00-481-6677
NSN 6110-01-339-5243
NSN 6320-00-894-1644
NSN 5999-01-545-7160
NSN 5935-01-615-9870
NSN 6105-01-515-9858
NSN 5999-00-493-1448
NSN 5895-01-582-4209
NSN 5960-00-766-6042
NSN 6135-01-648-2284
NSN 5920-00-006-1919
NSN 5905-00-550-0937