The valve body of the mounted ball valve is an integral design, not because of the extension of the pipeline, our valve is used, the ball and the valve seat are mounted structure, maintenance of the valve does not need to remove the valve from the pipeline, the ball and the valve stem can be integrated, effectively solve the processing gap between the valve stem and the ball, to ensure the precise location of the ball and the protection structure of the valve stem against blowing out. The sealing form of stem and valve cover is not the ordinary packing seal, but the packing box combination seal. The ball and seat can be sealed with PPL or metal hard seal according to customer's requirements.​