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Advantages and structural characteristics of carbon steel globe valveRelease Date: April 9, 2017
Advantages of carbon steel globe valve:
1. The fluid resistance is small, and its resistance coefficient is equal to the pipe section of the same length.
2. Simple structure, small size and light weight.
3． It is tight and reliable. At present, the sealing surface material of the gate valve is widely used in plastic and has good sealing performance. It has also been widely used in vacuum systems.
4． Easy operation, fast opening and closing, only need to rotate 90 ° from fully open to fully closed, which is convenient for remote control.
5． Convenient maintenance, simple gate valve structure, seal ring is generally movable, and it is more convenient to disassemble and replace.
6. When fully open or fully closed, the sealing surfaces of the ball and valve seat are isolated from the medium, and the medium will not cause erosion of the valve sealing surface when the medium passes.
7. Wide range of applications, from small diameter to several millimeters, large to several meters, from high vacuum to high pressure can be applied.
Carbon steel globe valve can be divided into straight type, three type and right angle type according to its channel position. The latter two types of gate valves are used to distribute the medium and change the direction of the medium.
Structural features of carbon steel globe valve:
1. No friction during opening and closing. This function completely solves the problem that the traditional [wiki] valve [/ wiki] affects the seal due to friction between the sealing surfaces.
2. Top-loading structure. The valve installed on the pipeline can be directly checked and repaired online, which can effectively reduce the equipment shutdown and reduce costs.
3. Single valve seat design. Eliminate the problem that the medium in the cavity of the valve affects the safety of use due to abnormal pressure rise.
4. Low torque design. The valve stem with special structure design can be easily opened and closed with a small handle.
5. Wedge-shaped seal structure. The valve is sealed by the mechanical force provided by the valve stem, which presses the ball wedge against the valve seat, so that the sealing of the valve is not affected by the change in the pressure difference of the pipeline, and the sealing performance is reliably guaranteed under various working conditions.
6. Self-cleaning structure of sealing surface. When the sphere is tilted away from the valve seat, the fluid in the pipeline passes through the sealing surface of the sphere uniformly at 360 °. .