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 5925-01-218-5420
NSN 5975-01-473-6033
NSN 5935-01-629-3487
NSN 5905-01-445-3552
NSN 5895-01-161-1706
NSN 5930-00-528-5252
NSN 5965-01-437-0352
NSN 5895-01-430-7181
NSN 6320-00-731-6134
NSN 6135-00-982-1882
NSN 5996-00-597-2234
NSN 5990-00-491-1338