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 5965-01-607-5435
NSN 7035-01-555-8793
NSN 6105-01-445-3655
NSN 5910-01-258-5846
NSN 6130-00-820-4986
NSN 4140-01-597-6800
NSN 6610-00-115-2142
NSN 5990-01-443-2931
NSN 6650-01-173-3060
NSN 6220-01-158-9583
NSN 4140-01-050-9194
NSN 6610-01-599-4462