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The Concentric Flanged Butterfly Valve gives several operational options to install, such as; handle, worm gear drive and electric or pneumatic control device. With its unique design of the valve body, the stem effectively separates from the valve body and reduces the rotation of the torque which results the valve stem to wear out.

 Polished to match the valve seat.Achieve zero leakage requirements for air tightness testing. The opening and closing torque is small, and the service life of the valve seat is extended.The stem seal is not easily deformed, thus avoiding the usual stem leakage.High precision and high strength, suitable for the installation of handles and other control devices.Strongly connected to the valve stem and valve plate, it has anti-vibration characteristics and is easy to replace.High precision and high reliability, easy to control the valve plate to open and close.The overall support is good, stable and stable, tensile and leakage prevention.Auxiliary to prevent shaft end leakage.