Refers to open and close the valve body (valve plate) driven by the stem seat sealing surface for the lifting movement of the valve, you can connect or disconnect the fluid passage. When the valve is partially open at the back gate to generate eddy currents, can lead to erosion and vibration damper, but also easy to damage the seat sealing surface, difficult to repair. Valve usually does not require frequent opening and closing, and keeping the shutter fully open or fully closed condition, does not apply to a regulator or throttling. Ceramic valves, wherein substituted surfacing carbide seal face common gate with ceramic sealing surface components. The assembly consists of ceramic sealing surface of the body, locking and sealing filler. Ceramic sealing surface of the body is made of a ceramic material ring trapezoidal cross-section at right angles to the outside of the cone. Locking device in a ring, the inner side is formed with a threaded section of the valve seat and valve connected, and a section with ceramic sealing surface of the body of tapered fit. Locking device body and the sealing surface of the ceramic filler is pressed against the valve seat and valve. The valve wear resistance, corrosion resistance, high temperature, easy maintenance, long life, for the power, chemical, defense, research and other fields to use. Installation of various industries currently on wear and corrosion resistant pipe valve using a valve metal sealing surface, using this valve has a century of history, during which although after the construction and improvement of materials, but the metal material due to their own conditions restrictions, increasingly unable to meet high wear, corrosion and other needs of poor working conditions, mainly for wear serious leakage, short life, greatly affected the stability of the system. For this traditional valve from the implementation of urgently needed materials, design and manufacturing processes and other aspects of a thorough and effective innovation. Zhengzhou peak thanks to the high-tech ceramic valve toughened ceramic material valve sealing parts and wearing flow components, thus making the valve can withstand the wear and tear of hard particles in the high-speed fluid medium, erosion, thereby increasing the valves wear resistance, corrosion resistance and sealing, greatly extending the life of the valve