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 5915-01-200-5945
NSN 5996-01-258-5327
NSN 6135-01-398-5922
NSN 4140-00-113-1279
NSN 2925-01-101-4655
NSN 6650-01-619-4030
NSN 6130-01-570-9958
NSN 5920-01-100-8939
NSN 6610-01-471-0175
NSN 6650-00-519-0973
NSN 6685-01-357-7606
NSN 5910-01-656-5929