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How do you get air out of a water pipe line?

Published in Plumbing Repair 3 mins read

To get air out of a water pipe line, you'll need to systematically bleed the air from the system. Here's a step-by-step guide:

  1. Turn off the Main Water Supply: Locate your main water shut-off valve and turn it off completely. This prevents more water from entering the pipes while you're removing the air.

  2. Open All Faucets Partially: Go to each faucet in your home (including showers and tubs) and turn them on to about half their capacity. The goal is to provide an escape route for the air.

  3. Wait for the Water to Stop Spluttering: Allow the faucets to run until the water flow becomes steady and free of air bubbles or sputtering. This might take a few minutes at each faucet. You may also hear gurgling sounds.

  4. Flush All Toilets: Flush all the toilets in your house. This helps remove air trapped in the toilet tanks and supply lines.

  5. Turn the Main Water Supply Back On Slowly: Gradually turn the main water supply valve back on. This prevents a sudden surge of water that could damage pipes.

  6. Check Faucets Again: Go back to each faucet and check the water flow. If you still notice sputtering or air bubbles, let the faucet run for a few more minutes until the water runs clear.

  7. Repeat if Necessary: In some cases, you may need to repeat these steps a few times to completely remove all the air from the water lines.

Why This Works:

Air can get trapped in water pipes after plumbing work, a water outage, or when the water pressure is low. By turning off the main supply and then opening the faucets, you create a pathway for the air to escape. Turning the main supply back on slowly allows the water to refill the pipes without trapping more air.

Important Considerations:

  • Start with the lowest faucets: Start by opening faucets on the lowest level of your home and work your way up. This helps the air naturally rise and escape.
  • Check outside faucets: Don't forget to open any outside faucets or hose bibs as well.
  • Dishwashers and Washing Machines: Run these appliances briefly to ensure air is cleared from their water lines.
  • Listen for gurgling: Gurgling sounds from faucets or toilets often indicate air in the lines.

By following these steps, you can effectively remove air from your water pipes and restore normal water flow.

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