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 5835-00-334-6556
NSN 4140-00-385-2925
NSN 6220-00-984-1324
NSN 5996-00-399-0731
NSN 5915-01-600-1058
NSN 6320-01-125-3361
NSN 4140-01-505-6545
NSN 4140-00-843-1300
NSN 6135-00-753-2276
NSN 5895-01-116-3271
NSN 6320-00-731-6134
NSN 4140-00-003-8311