Structural features of electric stop valve

1. Open and close without friction. This function completely solves the problem of traditional valves affecting sealing due to mutual friction between sealing surfaces.
2. Top loading structure. The valve installed on the pipeline can be inspected and repaired directly online, which can effectively reduce the shutdown of the device and reduce the cost.
3. Single 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 structural design can be easily opened and closed with only a small handle.
5. Wedge sealing structure. The valve is sealed by pressing the ball wedge to the valve seat with the mechanical force provided by the valve stem, 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 tilts away from the valve seat, the fluid in the pipeline passes evenly at 360° along the ball sealing surface, which not only eliminates the local erosion of the valve seat by the high-speed fluid, but also washes away the accumulation on the sealing surface, achieving 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 DN65 and above are steel castings.
8. The valve body and valve cover have different connection forms, including clamp pin connection, flange gasket connection and self-sealing thread connection.
9. The sealing surface of the valve seat and disc are all made of plasma spray welding or surfacing welding cobalt chromium tungsten carbide, the sealing surface has high hardness, wear resistance, scratch resistance and long service life.
10. The valve stem material is nitrided steel. The nitrided valve stem has high surface hardness, wear resistance, scratch resistance, corrosion resistance and long service life.