Hard sealed ball valve is a type of valve with good sealing performance. It adopts hard sealing technology and has three characteristics: high temperature resistance, high pressure resistance, and wear resistance. It can effectively prevent medium leakage and has good corrosion resistance, which can meet the requirements of various working conditions.
1. The working principle of a hard sealed ball valve is that when the valve stem rises, the hard sealing structure composed of the sealing ring and piston between the valve ball and the valve seat will be squeezed, causing the valve to close; When the valve stem descends, the hard sealing structure composed of the sealing ring between the valve ball and the valve seat and the piston will be stretched, causing the valve to open and achieve fluid control.
2. The structure of a hard sealed ball valve consists of a valve body, valve ball, valve stem, valve seat, sealing ring, piston, etc. The valve body consists of two parts, the upper part is the valve ball chamber and the lower part is the valve seat chamber. The valve ball chamber is equipped with a valve ball, and the valve seat chamber is equipped with a valve seat. The valve ball and the valve seat are connected by a hard sealing structure composed of a sealing ring and a piston. The valve stem is supported by a bearing on the upper part of the valve body, and 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 up and down movement of the valve stem is controlled by the rotation of the handwheel, thereby controlling the opening and closing of the valve.
3. Hard sealed ball valves have excellent sealing performance, which can effectively prevent the leakage of media, have good corrosion resistance, can effectively resist the erosion of corrosive media, have good operational performance, can achieve rapid opening and closing, have a compact structure, can effectively reduce the space occupation of pipeline systems, have good wear resistance, can effectively resist the wear of media, have good reliability, and can effectively ensure the safe operation of pipeline systems.
