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 5945-00-072-6890
NSN 4140-01-198-1452
NSN 5965-00-499-8229
NSN 5925-01-278-4957
NSN 6145-00-088-8463
NSN 5998-01-415-9105
NSN 6105-01-011-0431
NSN 5998-00-250-5215
NSN 5950-01-255-1879
NSN 5990-00-524-2293
NSN 5905-01-164-6299
NSN 6240-01-364-5110