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 5905-01-562-0172
NSN 5915-01-398-9831
NSN 5990-00-736-8778
NSN 6320-01-421-3777
NSN 5945-01-140-3100
NSN 5999-00-477-3084
NSN 6620-01-395-5214
NSN 6220-01-275-7239
NSN 5990-01-561-0737
NSN 6105-00-420-2335
NSN 5855-01-297-7847
NSN 5960-00-522-5231