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 5920-01-056-7603
NSN 5910-00-497-7753
NSN 5835-01-116-2369
NSN 5999-01-305-4263
NSN 2925-00-670-0638
NSN 6240-01-253-0687
NSN 6130-01-009-5417
NSN 6105-01-315-1873
NSN 6145-00-881-4203
NSN 5945-01-589-8056
NSN 5996-01-029-4196
NSN 6110-01-268-1723