Installation principle of pneumatic control valve:
1 The installation position of the pneumatic control valve requires a certain height from the ground, and there must be a certain space above and below the valve to facilitate the disassembly and repair of the valve. For regulating valves equipped with pneumatic valve positioners and handwheels, it must be easy to operate, observe and adjust.
2. The regulating valve should be installed on the horizontal pipeline, and vertical to the pipeline up and down. Generally, it should be supported under the valve. For special occasions, when the regulating valve needs to be installed horizontally on a vertical pipeline, the regulating valve should also be supported (except for the small-diameter regulating valve). When installing, avoid placing additional stress on the regulating valve.
3. The working environment temperature of the regulating valve should be (-30-- plus 60) relative humidity not more than 95 percent
4. There should be a straight pipe section at the front and rear of the regulating valve, and the length should not be less than 10 times the pipe diameter (10D), so as to avoid the straight pipe of the valve being too short and affecting the flow characteristics.
5. When the diameter of the regulating valve is not the same as that of the process pipeline, it should be connected with a reducer. Threaded connections can be used when installing small-diameter control valves. The fluid direction arrow on the valve body should be consistent with the fluid direction
6. To set up the bypass pipe. The purpose is to facilitate switching or manual operation, and the valve can be adjusted for maintenance without stopping
7. Before installing the regulating valve, thoroughly remove foreign objects in the pipeline, such as dirt, welding slag, etc.
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