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 5996-00-156-5967
NSN 5990-01-019-3447
NSN 5985-01-192-2281
NSN 2925-00-808-5077
NSN 6150-01-602-8948
NSN 6620-01-359-9363
NSN 5835-01-193-0391
NSN 5960-01-521-6865
NSN 5990-00-513-5328
NSN 5960-01-609-6565
NSN 4140-01-017-8292
NSN 5975-00-947-6045