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 6135-01-400-2947
NSN 5905-00-294-9445
NSN 6645-01-561-3516
NSN 5950-01-044-0848
NSN 6135-01-252-0315
NSN 5905-01-176-4346
NSN 6620-01-504-0997
NSN 5925-00-420-7675
NSN 5998-01-467-4901
NSN 5930-01-487-4206
NSN 5999-01-004-4043
NSN 6685-01-327-3195