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 5985-01-200-5561
NSN 7035-01-421-7159
NSN 5855-01-581-5827
NSN 5935-01-025-0169
NSN 5930-00-471-3702
NSN 5930-00-467-7596
NSN 5920-00-994-0558
NSN 6610-00-213-8544
NSN 4140-01-195-6489
NSN 5998-00-004-4462
NSN 6105-01-483-5405
NSN 6685-01-062-5777