How to install the angle type regulating valve

The angle type regulating valve is widely used in industrial control systems such as chemical industry, petrochemical industry, electricity, metallurgy, etc., due to its advantages such as compact structure, simple flow path, and small pressure loss. It performs exceptionally well in high viscosity, crystalline, and particle-containing media. To ensure that the angle type regulating valve operates at its best performance in actual operation, the correct installation method is crucial. This article will introduce in detail the installation steps and precautions for the angle type regulating valve.

1. Preparations before installation

Before installing the angle regulating valve, it is necessary to make full preparations to ensure the smooth progress of the installation work:

1. Check the valve model and parameters: Confirm that the specifications, model, material, and connection method of the selected valve meet the process requirements to ensure matching with the pipeline system.
2. Check the pipeline cleanliness: The pipeline should be thoroughly cleaned before installation to prevent slag, rust, silt, and other impurities from entering the valve body, causing damage to the valve core or seat.
3. Check the installation location: Determine the installation location and direction of the valve according to the process flow diagram, and pay attention to whether the medium flow direction is consistent with the valve marking.
4. Prepare the installation tools and materials: such as wrenches, sealing gaskets, bolts and nuts, and ensure that the tools are complete and in good condition.

2. Installation steps

1. Selection of connection method
The common connection methods of the angle regulating valve include flange connection, threaded connection, and welding connection. The appropriate connection method should be selected according to the on-site conditions and system requirements.

2. Flange installation
If flange connection is used, the valve and pipeline flange should be aligned, keeping the two flanges parallel, using appropriate gaskets and evenly tightening the bolts to prevent leakage due to uneven force distribution.

3. Pay attention to the flow direction
The angle regulating valve has a clear fluid direction requirement, and it should be installed strictly according to the arrow direction marked on the valve body to avoid reverse installation, which may cause a decrease in regulating performance or even damage the valve.

4. Actuator installation
The actuator (such as an electric or pneumatic actuator) should be installed after the valve body is securely installed. During the installation process, ensure that the actuator is connected correctly and securely to the valve rod, and adjust the zero point and stroke to ensure control accuracy.

5. Installation location and space
The valve should be installed in a location that is convenient for operation, observation, and maintenance, and sufficient maintenance space should be left around. Avoid installing in areas with strong vibration or high temperatures.

3. Inspection and debugging after installation

1. Sealing check: After installation, the system should be pressure tested to check for leaks.
2. Action test: Input the control signal to verify whether the opening and closing action of the valve is flexible and the response is accurate.
3. regulating performance test: Adjust the valve opening through the control system to detect whether the flow regulation performance meets the process requirements.

4. Matters needing attention

- Avoid striking the valve body during installation to prevent damage to the internal components.
- The valve should not be used as a pipeline support point, and a separate bracket should be set up.
- For high or low temperature media, suitable sealing materials and structures should be selected.
- Before the system trial operation, the valve should be closed to prevent impurities from entering.

Conclusion

The installation of the angle regulating valve is a technically demanding task that must be carried out strictly in accordance with the operational procedures. Only scientific and reasonable installation can ensure its stable and reliable operation in the system, exert the proper regulating function, and prolong its service life. At the same time, the installer should have certain professional knowledge and practical experience to meet the installation requirements under various complex working conditions.