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 5985-01-116-2295
NSN 5925-01-242-3527
NSN 6620-01-285-4685
NSN 5996-00-350-7957
NSN 4140-00-209-7965
NSN 5975-00-004-4981
NSN 5935-01-555-8630
NSN 6105-01-630-2239
NSN 6240-00-883-8484
NSN 6105-01-375-2810
NSN 7035-00-252-7467
NSN 6105-01-549-7398