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 5920-01-303-5951
NSN 5996-01-490-6285
NSN 6240-01-519-5893
NSN 5945-01-227-4636
NSN 6130-00-802-6482
NSN 5905-01-106-3515
NSN 6620-01-118-2337
NSN 5835-01-216-6208
NSN 6220-00-421-8201
NSN 5905-01-044-5183
NSN 5925-00-825-2753
NSN 6240-00-832-6867