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 5990-00-016-5648
NSN 5910-01-325-2575
NSN 5950-01-506-6158
NSN 6130-01-004-7331
NSN 5910-00-103-1654
NSN 5930-01-519-3691
NSN 6645-01-133-4440
NSN 5990-01-386-5561
NSN 5935-00-952-2897
NSN 5975-00-171-1344
NSN 5915-00-151-7849
NSN 6110-01-227-1617