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 5905-01-511-9449
NSN 5910-01-091-9943
NSN 2925-01-609-8464
NSN 5930-01-556-8045
NSN 6685-01-050-2201
NSN 6130-01-298-1059
NSN 6240-01-375-6119
NSN 5910-01-061-1963
NSN 5985-01-513-9930
NSN 7035-01-633-9537
NSN 6650-01-492-7809
NSN 5895-01-382-9624