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 5915-01-292-9129
NSN 5905-01-136-3193
NSN 5950-01-204-2228
NSN 6130-00-164-4850
NSN 2925-01-629-9416
NSN 2925-01-219-9471
NSN 5855-01-320-7640
NSN 5835-00-958-6231
NSN 6610-01-168-7943
NSN 6240-01-317-1382
NSN 5985-00-057-7983
NSN 6650-01-236-5916