Fixed ball valve

The invention relates to the technical field of ball valves, in particular to a fixed ball valve. The fixed ball valve comprises a first valve body and a second valve body which are welded. A ball body is installed in a first cavity formed by welding the first valve body and the second valve body. The ball body achieves fixation and locating through a valve rod and a locating assembly. The first valve body and the second valve body are provided with discharging channels of welding slag and welding gas. The valve rod adopts double-bearing support. A shaft step on the valve rod and a limiting step on a second installation hole of the first valve body form a valve rod blowout preventing structure. The fixed ball valve is simple in structure, less in weld seam and not prone to generating leakage points; welding slag and welding gas discharging channels can effectively reduce stress concentration and welding deformation, and the service life of the ball valve is prolonged; the blowout preventing structure is simpl