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 5998-00-019-8708
NSN 5920-00-434-4230
NSN 5930-01-543-3335
NSN 5960-00-422-5376
NSN 6145-01-361-7869
NSN 5835-01-163-4215
NSN 5915-01-123-2906
NSN 6150-01-511-9565
NSN 6240-00-935-4403
NSN 5945-01-100-5482
NSN 6105-00-010-2386
NSN 6610-01-361-8965