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 5920-01-431-3263
NSN 5996-01-036-2497
NSN 5985-01-441-1922
NSN 5930-01-231-9605
NSN 5990-00-348-1423
NSN 5915-01-633-9845
NSN 6240-00-997-4559
NSN 5855-01-585-8620
NSN 6220-00-900-7595
NSN 5999-01-369-6620
NSN 6110-01-580-8323
NSN 5945-00-661-0506