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 5920-00-335-8967
NSN 6135-01-375-6724
NSN 6145-01-353-2890
NSN 5935-00-201-9303
NSN 5945-01-472-6266
NSN 5998-00-268-7910
NSN 5990-01-261-2962
NSN 5965-00-548-4287
NSN 6220-01-180-7386
NSN 5910-01-421-4828
NSN 6110-00-257-1446
NSN 6240-00-284-1457