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 6135-00-500-2082
NSN 4140-00-269-8545
NSN 6150-01-032-4556
NSN 6150-01-355-5054
NSN 5985-01-604-9649
NSN 5835-01-200-7153
NSN 7035-01-511-6219
NSN 5905-00-754-3327
NSN 6650-01-423-1348
NSN 5990-00-365-4591
NSN 6650-01-625-7826
NSN 6130-00-758-0394