The utility model discloses a but canned type ball control valve, which comprises the following components: a valve body, valve rod and handle, be provided with the spheroid in the valve body, the handle passes through the top of bolt fastening at the valve rod, the bottom of valve rod stretch into in the valve body and with spheroidal top surface fixed connection, the valve body includes connectsfixed half valve body on the left side and half right valve body through the screw rod, be provided with left side open -ended valve pocket in half valve body on the right side, be provided with ladder joint portion and sealing ring slot on the valve pocket inboard of half valve body on the right side, right flank at half valve body on the left side is fixed with ladder butt portion and annular boss, it is fixed with the metal winding gasket piece to press supporting of ladder joint portion and ladder butt portion between the face, there is O type sealing washer at the sealing ring slot internal fixation, be provided with fan -shaped runner at spheroidal center. The utility model discloses a structure sets up rationally, conveniently assembles, improves assembly efficiency, also can guarantee the reliable and stable nature of use of ball valve, improves flow control's precision, reaches accurate control flow system, and the stability in use is good, and the suitability is strong and the practicality is good.