Ball valve

The utility model discloses a ball valve, including drive arrangement, transmission, the sealing performance is good. Drive arrangement includes motor element and shells assembly, motor element includes the coil, the magnet rotor, drive arrangement still includes drive shaft and pipe box, shells assembly includes casing and connecting seat, the connecting seat include with pipe box complex cooperation position, the connecting seat is cooperating the position sealed fixed with the pipe box, ball valve includes a chamber, the chamber is formed by connecting seat or pipe box at least, perhaps thechamber is formed by the partly of connecting seat and the partly of pipe box at least, the magnet rotor is located the intracavity, the coil is located outside the chamber, the drive shaft has at least some to set up in the chamber, the one end and the transmission transmission of drive shaft are connected, the drive shaft can drive the transmission action when rotating, the connecting seat is sealed fixed with the valv