Structural characteristics of electric gate valve

1. Open and close without friction. This function completely solves the problem that the traditional valve will affect the sealing due to the friction between the sealing surfaces.
2. Top-loading structure. The valve installed on the pipeline can be directly inspected and maintained online, which can effectively reduce the shutdown of the device and reduce the cost.
3. Single valve seat design. It eliminates the problem that the medium in the cavity of the valve affects the safety of use due to abnormal pressure increase.
4. Low torque design. The valve stem with special structure design can easily open and close the valve with only a small handle.
5. Wedge-shaped sealing structure. The valve relies on the mechanical force provided by the valve stem to press the ball wedge onto the valve seat to seal, so that the sealing performance of the valve is not affected by the change of pipeline pressure difference, and the sealing performance is reliably guaranteed under various working conditions.
6. Self-cleaning structure of sealing surface. When the ball is tilted away from the valve seat, the fluid in the pipeline passes 360° evenly along the sealing surface of the ball, which not only eliminates the local scouring of the valve seat by the high-speed fluid, but also washes away the accumulation on the sealing surface to achieve the purpose of self-cleaning .
7. The valve body and bonnet of the valve diameter below DN50 are die forgings, and the valve body and bonnet of the valve above DN65 are cast steel parts.
8. There are different connection forms between the valve body and the bonnet, such as clamp pin connection, flange gasket connection and self-sealing thread connection.
9. The sealing surfaces of the valve seat and valve disc are all made of plasma spray welding or surfacing welding of cobalt-chromium-tungsten carbide. The sealing surface has high hardness, wear resistance, abrasion resistance and long service life.
10. The valve stem material is nitrided steel. The surface of the valve stem after nitriding has high hardness, wear resistance, abrasion resistance, corrosion resistance and long service life.

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