What parameters should be provided when purchasing electric ball valves
The more parameters, the better, so that the selection will be more accurate. Generally speaking, it is better to include all the following contents: medium name, medium density, medium viscosity, pipe material, pressure rating, caliber, operating temperature, medium flow, Reynolds number, leakage level or sealing requirements, etc. In this way, designers will fully consider when selecting models, which is more suitable for the actual use requirements of the site. As for the hand valve for natural gas, soft seal is generally selected. What parameters should be provided when purchasing electric ball valves?
It is a relatively new type of ball valve. It has some advantages unique to its own structure, such as no friction on the switch, no wear on the seal, and small opening and closing torque. This will reduce the size of the actuator. Equipped with multi rotation electric actuator, the medium can be adjusted and cut off tightly. It is widely used in petroleum, chemical industry, urban water supply and drainage and other working conditions requiring strict cut-off.
It is mainly used to cut off, distribute and change the flow direction of medium in the pipeline. Ball valve is a new type of valve widely used in recent years. It has the following advantages:
1. The fluid resistance is small, and its resistance coefficient is equal to that of pipe sections with the same length.
2. Simple structure, small volume and light weight.
3. Tight and reliable. At present, plastic is widely used as the sealing surface material of the ball valve with good sealing performance, and it has also been widely used in the vacuum system.
4. Convenient operation, fast opening and closing, 90 ° rotation from full opening to full closing, convenient for remote control.
5. It is easy to maintain, the ball valve structure is simple, the sealing ring is generally movable, and it is easy to remove and replace.
6. When the valve is fully opened or closed, the sealing surfaces of the ball and valve seat are isolated from the medium. When the medium passes through, it will not cause erosion of the valve sealing surface.
7. It has a wide range of applications, ranging from a few millimeters to several meters in diameter, from high vacuum to high pressure. When the ball rotates 90 degrees, it should all appear spherical at the inlet and outlet, so as to cut off the flow.
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