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Z23X-35 series mud gate valve is mainly used in oil well mud circulation system equipment, used to control the circulation and closing of the mud, the connection type is trapezoidal pattern connection, quick and easy installation, rigidity, safe and reliable, the valve seat and the gate valve adopt parallel type elastic seal,Sealing effect is good, open light.The valve ends are connected with the pipeline seal; the use of spherical contact, and O-type rubber ring combined activities of the street with the installation of both ends of the straight pipe is not demanding and good sealing performance.