Hard sealed butterfly valve

Hard sealed butterfly valve refers to a butterfly valve whose valve disc sealing surface and valve seat sealing surface are made of hard materials. Generally, alloy steel or hard alloy is selected as the sealing surface material for the valve seat. Hard sealed butterfly valves are mainly suitable for applications with high medium temperatures. The main structure of a hard sealed butterfly valve includes a valve body, a butterfly plate, a valve stem, a sealing ring, and a transmission device. The valve body is cylindrical in shape, with cylindrical protrusions on the upper and lower parts for installing the valve stem. Butterfly plate is the opening and closing component of butterfly valve, which can be divided into flange connection, butt welding connection and clamp connection according to the connection type. It can be divided into manual, gear transmission, pneumatic, hydraulic and electric transmission according to the transmission mode. The hard sealed butterfly valves produced by Shanghai Meiyan Yi Pump Valve are widely used in pipeline equipment in industries such as petrochemicals and coal chemical engineering, with stable weight and favorable prices.