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 5998-00-146-3853
NSN 4140-00-613-9209
NSN 7035-01-501-5549
NSN 5835-01-504-0837
NSN 6610-01-583-4364
NSN 5855-00-869-3635
NSN 4140-01-570-2566
NSN 2925-01-218-5556
NSN 6650-00-769-3003
NSN 5985-01-293-3356
NSN 6620-00-555-3992
NSN 6130-01-065-0541