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 5855-00-477-9943
NSN 5835-01-502-9228
NSN 5960-01-653-9441
NSN 7035-01-495-7134
NSN 5895-01-340-5502
NSN 5960-01-558-7787
NSN 6105-01-461-3213
NSN 6610-01-441-1581
NSN 6130-01-425-2678
NSN 6610-00-553-5103
NSN 5895-00-678-3356
NSN 5925-01-297-4194