How to install a High - Pressure Threaded Ball Valve?

Learn all about installing high - pressure threaded ball valves here.

1. What should I do before installing a high - pressure threaded ball valve?
▶Check Compatibility
♦Pressure Rating: Ensure the valve's pressure rating can handle the maximum pressure of the pipeline. For example, if the pipeline operates at 1000 psi, the valve should be rated for at least this pressure.
♦Port Diameter: The valve's port diameter must match the pipeline's. A mismatch can lead to flow problems or leaks.
▶Inspect the Valve
♦Body: Examine the valve body for any cracks or dents.
♦Threads: Check the threads for signs of stripping. Damaged threads can prevent a secure connection.
♦Internal Components: Make sure the ball inside moves freely and the seat is in good condition. Replace any defective valves before installation.
▶Prepare the Pipeline
♦Cleaning: Use brushes or solvents to thoroughly clean the inside and outside of the pipeline, removing dirt, rust, and debris.
♦Drying: Dry the pipeline well to avoid corrosion or seal issues.
Alignment and Support: Ensure the pipeline is straight and well - supported.

2. How do I install a high - pressure threaded ball valve with a threaded connection?
a.Apply Sealant
You can use Teflon tape or a thread - sealing compound. Wrap Teflon tape clockwise around the male threads, covering 3 - 4 threads. If using a compound, spread it evenly on the threads with a brush.
b.Screw the Valve
Align the valve with the pipeline and start screwing it in using a wrench. Be careful not to overtighten, as this can damage the threads or the valve. Check the valve's alignment during installation.

3. How is a high - pressure threaded ball valve installed with a welded connection?
⑴.Clean the Welding Area
Remove paint, oil, or other impurities from the valve and pipeline surfaces to be welded. Use a wire brush or grinder until the surfaces are shiny.
⑵.Weld the Parts
A qualified welder should perform the welding. They will choose the appropriate technique, such as arc or TIG welding, based on the materials. Support the valve during welding to prevent movement and let the welded area cool slowly.

4. What should I do after installing the high - pressure threaded ball valve?
Pressure Test
Connect a pressure - testing tool to the pipeline. Slowly raise the pressure to the pipeline's maximum operating pressure or slightly higher. Watch for leaks at the valve and connections. If there are leaks, release the pressure and fix the problem.
Function Test
Open and close the valve a few times. Ensure the ball rotates freely and the valve can fully open and close. This ensures proper operation during normal use.
In conclusion, installing a high - pressure threaded ball valve requires careful pre - installation checks, correct installation methods, and thorough post - installation tests. By following these steps, you can ensure a successful installation.