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 5920-00-288-5849
NSN 6320-00-036-3688
NSN 5925-01-617-0364
NSN 6220-01-142-2329
NSN 6610-01-545-0766
NSN 6110-00-521-1107
NSN 5975-01-546-4606
NSN 6145-00-213-9181
NSN 6130-00-662-8557
NSN 5835-01-380-5086
NSN 6650-01-359-4238
NSN 6220-01-018-2049