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 2925-01-359-4027
NSN 5960-00-415-1797
NSN 6150-00-075-4965
NSN 5905-01-505-7500
NSN 6645-01-096-9719
NSN 5999-00-978-0919
NSN 5999-00-905-6936
NSN 5905-01-352-5824
NSN 5930-01-017-8231
NSN 5920-01-433-4965
NSN 2925-00-546-3129
NSN 5910-00-102-5668