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 6610-00-835-0248
NSN 5999-01-651-7914
NSN 4140-01-657-5494
NSN 5935-01-542-5591
NSN 5920-01-501-5593
NSN 5998-01-502-2926
NSN 6645-01-508-6028
NSN 5998-01-132-1483
NSN 6145-01-604-9552
NSN 5999-01-126-8705
NSN 7035-00-679-9027
NSN 5895-01-386-6484