What Psi to Blow Out RV Water Lines

What PSI to Blow Out RV Water Lines: A Comprehensive Guide

As winter approaches, it is essential for RV owners to take proper precautions to protect their vehicles from the freezing temperatures. One important step in winterizing an RV is blowing out the water lines to ensure that no water is left inside to freeze and cause damage. In this article, we will discuss the recommended PSI for blowing out RV water lines and answer some frequently asked questions about the process.

What PSI is recommended for blowing out RV water lines?

The recommended PSI (pounds per square inch) for blowing out RV water lines is between 30 and 50 PSI. This range is considered safe and effective for removing all the water from the lines. It is important to note that exceeding this range can potentially damage the plumbing system, while using a lower PSI may not fully clear the lines of water.

Blowing out RV water lines with an air compressor:

To blow out RV water lines, you will need an air compressor with a pressure regulator. Connect the compressor to the RV’s city water inlet using a blowout plug or a special adapter. Set the pressure regulator to the desired PSI within the recommended range, then turn on the compressor and allow the air to flow through the lines. Start with the farthest faucet from the water pump and work your way towards it, opening one faucet at a time to let the air pass through. Repeat this process for all faucets, including the shower, toilet, and outdoor shower if applicable.

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FAQs about blowing out RV water lines:

1. Why is blowing out RV water lines necessary for winterization?
Blowing out water lines removes any remaining water that could freeze and cause damage to the plumbing system, such as cracking pipes or damaging valves.

2. Can I blow out RV water lines without an air compressor?
While it is possible to blow out water lines using other methods like a hand pump or manual air blower, an air compressor is the most efficient and effective tool for the task.

3. How long should I blow out each faucet?
It is recommended to blow out each faucet for at least 1-2 minutes to ensure all water is removed from the lines.

4. What if I have a hot water tank in my RV?
Before blowing out the water lines, make sure to drain and bypass the hot water tank to prevent damage. Refer to your RV’s owner’s manual for specific instructions.

5. Should I blow out the freshwater tank as well?
No, blowing out the freshwater tank is not necessary as long as it is drained properly. Focus on blowing out the water lines and faucets instead.

6. Can I use a higher PSI to blow out the water lines faster?
It is strongly advised not to exceed the recommended PSI range. Higher pressure can potentially damage the plumbing system, leading to costly repairs.

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7. Do I need to blow out the black and gray water tanks?
No, blowing out the black and gray water tanks is not required for winterizing. However, it is essential to properly empty and clean these tanks before storing your RV.

In conclusion, blowing out RV water lines is a crucial step in winterizing your vehicle. Using an air compressor with a pressure regulator set between 30 and 50 PSI is the recommended method. By following the proper steps and taking necessary precautions, you can safeguard your RV’s plumbing system from potential damage caused by freezing water.