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 5855-01-261-5495
NSN 5996-00-976-1429
NSN 6645-01-289-2950
NSN 6130-00-525-9975
NSN 5998-01-049-3866
NSN 5855-00-494-9581
NSN 5998-01-328-8288
NSN 5965-01-482-8786
NSN 5999-01-359-5931
NSN 5950-00-551-3105
NSN 5996-01-140-6084
NSN 7035-01-224-5165