The installation method of the ball valve needs to be determined according to the type of the ball valve, the characteristics of the pipeline and the specific use environment. Here are the general installation steps and precautions:
First, prepare before installation
1. Confirm the pipeline status: ensure that the pipeline before and after the ball valve is ready, and the pipeline should be coaxial, and the sealing surface of the two flanges should be parallel. The pipe should be able to withstand the weight of the ball valve, otherwise appropriate support needs to be configured on the pipe.
2. Cleaning pipes and ball valves: purge the ball valves and pipes, remove the oil, welding slag and all other impurities in the pipeline, and clean the inside and outside of the ball valve to ensure that there are no impurities and oil.
3. Check the ball valve: check the mark of the ball valve to ensure that the ball valve is intact. Fully open and close the ball valve several times to verify that it is working properly.
Second, installation steps
1. Connection flange:
- Remove the protection on the connecting flanges at both ends of the ball valve.
- Align the flange of the ball valve with the flange of the pipe, ensuring that the flange holes are aligned.
- Use flange bolts to connect the ball valve and pipe tightly, and tighten the bolts one by one to ensure a solid connection.
2. Install the gasket:
- Apply appropriate amount of sealant or install sealing gaskets on the sealing surface between the ball valve and the pipeline to ensure the flatness and sealing performance of the sealing surface.
3. Connect the operating device:
- Connect the valve stem head of the ball valve to the operating device (such as a handle, gearbox or pneumatic drive) to ensure that the operating device can smoothly rotate the valve stem.
4. Check the installation:
- After the installation is complete, check whether the installation of the ball valve meets the requirements, especially check whether the flange connection is tight and the sealing performance is good.
- Try to operate the ball valve several times to ensure that the valve can open and close properly.
Third, installation precautions
1. Installation position: The ball valve should generally be installed on the horizontal pipe, if it must be installed on the vertical pipe, the valve stem should be facing up, so as to avoid the valve core being pressed by the fluid on the seat, resulting in the ball valve can not be closed normally.
2. Operating space: Leave enough space before and after the ball valve to facilitate the operation and maintenance of the ball valve.
3. Avoid damage: During the installation process, pay attention to avoid the ball valve being impacted or scratched, so as not to damage the valve or affect its sealing performance.
4. Sealing performance: Ensure that the sealing surface is smooth and clean, and use appropriate gaskets or sealant to ensure the sealing performance of the ball valve.
5. Drive device: Ball valves with gearboxes or pneumatic drives should be installed upright, and ensure that the drive device is above the pipeline for easy operation and maintenance.
In short, the installation of ball valves is a meticulous and important process that needs to be carried out in strict accordance with the installation instructions and operating procedures. Proper installation can ensure the normal use of the ball valve, improve the service life of the ball valve, and reduce the risk of leakage and other failures.
Post time: Sep-18-2024