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 5855-01-171-8391
NSN 5990-01-336-3976
NSN 6610-01-233-5857
NSN 5905-01-541-4145
NSN 6145-00-470-1606
NSN 4140-01-456-0891
NSN 5998-01-604-6964
NSN 5835-00-170-5238
NSN 6685-00-198-9506
NSN 5990-01-565-2226
NSN 5998-01-223-9918
NSN 2925-00-355-5130