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 5998-01-446-6249
NSN 7035-00-830-1235
NSN 7035-01-080-8742
NSN 5920-00-119-1406
NSN 5945-00-296-8464
NSN 4140-01-175-3883
NSN 5945-01-014-0624
NSN 4140-00-229-8467
NSN 6685-01-401-5360
NSN 5930-01-369-9011
NSN 5998-00-225-0805
NSN 6135-01-469-6429