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 5985-00-726-2290
NSN 6220-01-440-9763
NSN 5960-01-413-3877
NSN 6620-01-296-7380
NSN 5985-00-173-6317
NSN 5920-01-570-4920
NSN 5915-01-288-4686
NSN 5975-01-071-7749
NSN 5965-00-761-4666
NSN 6645-00-296-8310
NSN 6145-01-359-6449
NSN 5935-01-602-7783