What is a hard seal ball valve? Working principle of hard seal ball valve

What is a hard seal ball valve? Working principle of hard seal ball valve

Hard seal ball valve is a kind of valve with good sealing performance. It adopts hard seal technology and has three major characteristics: high temperature resistance, high pressure resistance and wear resistance. It can effectively prevent the leakage of media and has good corrosion resistance. Meet the requirements of various working conditions.

1. The working principle of the hard-sealed ball valve is: when the valve stem rises, the hard-sealing structure composed of the sealing ring and the piston between the valve ball and the valve seat will be squeezed to close the valve; when the valve stem descends, the valve ball The hard sealing structure composed of the sealing ring and the piston between the valve seat and the valve seat will be stretched, causing the valve to open, thereby achieving fluid control.

2. The structure of the hard-sealed ball valve consists of the valve body, valve ball, valve stem, valve seat, sealing ring, piston, etc. The valve body is composed of upper and lower parts. The upper part is the valve ball chamber, and the lower part is the valve seat chamber. The valve ball is installed in the valve ball chamber, and the valve seat is installed in the valve seat chamber. There is a sealing ring between the valve ball and the valve seat. It is connected to a hard sealing structure composed of a piston. The valve stem is supported by the bearing on the upper part of the valve body. The upper end of the valve stem is connected to the valve ball. The lower end of the valve stem is connected to the handwheel outside the valve body. The valve stem is controlled by the rotation of the handwheel. moves up and down to control the opening and closing of the valve.

3. The hard-sealed ball valve has good sealing performance, can effectively prevent the leakage of the medium, has good corrosion resistance, can effectively resist the erosion of corrosive media, has good operating performance, can achieve rapid opening and closing, and has good The compact structure can effectively reduce the space occupied by the pipeline system. It has good wear resistance and can effectively resist the wear of the medium. It has good reliability and can effectively ensure the safe operation of the pipeline system.