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 5855-00-149-0766
NSN 6610-01-462-7154
NSN 6135-01-422-1440
NSN 6620-01-339-9404
NSN 6110-00-172-1809
NSN 5960-01-439-9517
NSN 5975-00-006-2049
NSN 5930-00-284-3518
NSN 6320-01-277-5793
NSN 5998-00-727-4426
NSN 5975-01-416-7332
NSN 5945-01-121-8080