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 6645-00-149-1100
NSN 4140-00-720-1836
NSN 5999-00-626-3538
NSN 5960-00-564-4792
NSN 5998-00-086-9876
NSN 5930-01-354-5242
NSN 5998-01-581-6584
NSN 5996-00-126-6139
NSN 5905-00-813-2280
NSN 5950-01-499-3036
NSN 7035-01-310-2587
NSN 5950-01-403-2852