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 6150-01-087-8722
NSN 5930-01-487-4481
NSN 5835-01-208-8800
NSN 5905-01-331-0460
NSN 6685-01-083-6634
NSN 5905-00-529-6999
NSN 6135-00-990-1822
NSN 5996-01-232-0067
NSN 6240-01-512-1856
NSN 5920-01-096-1864
NSN 5975-01-157-9432
NSN 5935-01-062-0566