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 5990-01-232-2625
NSN 5925-01-269-3995
NSN 5998-00-239-1341
NSN 5895-01-625-9771
NSN 6150-01-076-4811
NSN 5999-00-085-2510
NSN 6685-00-156-3054
NSN 5920-00-566-7047
NSN 6685-01-512-8345
NSN 5945-01-078-0370
NSN 6610-01-192-5051
NSN 6110-00-393-1212