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 4140-00-792-8398
NSN 5915-01-456-6832
NSN 5935-01-284-3646
NSN 6105-01-414-0083
NSN 5855-01-298-6659
NSN 5915-01-384-4464
NSN 5905-01-007-1448
NSN 5910-00-782-8525
NSN 5925-00-864-6228
NSN 6135-01-400-2947
NSN 6130-00-723-4119
NSN 6645-01-007-5295