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 5985-01-048-1676
NSN 5999-00-788-5279
NSN 6650-00-586-3726
NSN 5960-00-792-6532
NSN 6135-01-442-4581
NSN 6240-01-204-1918
NSN 7035-01-062-6089
NSN 5905-01-124-3625
NSN 6620-01-483-1138
NSN 5975-01-104-7028
NSN 5996-00-468-1874
NSN 5998-01-467-9373