Diy plumbing hack: can you turn pex fittings after crimping? discover the truth

PEX (cross-linked polyethylene) fittings are widely used in plumbing due to their ease of installation and durability. However, one common question that arises among DIYers and professionals alike is whether you can turn PEX fittings after crimping. This blog post aims to provide a comprehensive understanding of the crimping process and the implications of turning fittings afterward.

The Importance of Crimping PEX Fittings

Crimping is an essential step in securing PEX fittings to pipes. It involves using a specialized crimping tool to compress a metal ring around the fitting, creating a tight seal that prevents leaks. The proper crimping technique ensures a secure connection that can withstand high water pressure and temperature fluctuations.

Can You Turn PEX Fittings After Crimping?

The simple answer is no, you should not turn PEX fittings after crimping. Here’s why:

• Compromised Seal: Turning a crimped fitting can disrupt the seal created by the crimping process. This can lead to leaks and potential damage to the plumbing system.
• Weakened Connection: The crimping process creates a permanent connection between the fitting and the pipe. Turning the fitting can weaken this connection, reducing its ability to withstand water pressure and temperature changes.
• Voiding Warranty: Most PEX fitting manufacturers void their warranties if the fittings are turned after crimping. This is because turning the fittings can compromise the integrity of the connection.

Exceptions to the Rule

There are a few exceptions to the rule of not turning PEX fittings after crimping:

• Loose Crimp: If a fitting was not crimped properly and is loose, it may be necessary to turn it slightly to ensure a secure connection. However, this should be done with extreme caution and only as a last resort.
• Damaged Fitting: If a fitting is damaged, it may be necessary to replace it. In this case, you will need to cut out the damaged fitting and install a new one.

Best Practices for PEX Fitting Installation

To avoid the need to turn PEX fittings after crimping, follow these best practices:

• Use the Correct Crimping Tool: Ensure you have the appropriate crimping tool for the type of PEX fittings you are using.
• Crimp According to Specifications: Follow the manufacturer’s instructions for the proper crimping technique and torque settings.
• Inspect the Crimp: After crimping, inspect the connection to ensure it is secure and there are no visible gaps or leaks.

Consequences of Turning PEX Fittings After Crimping

Turning PEX fittings after crimping can have serious consequences, including:

• Leaks: The most common consequence is leaks, which can cause water damage and increase utility bills.
• Pipe Rupture: In extreme cases, turning a crimped fitting can weaken the connection to the point of pipe rupture, resulting in flooding and extensive damage.
• Voided Warranty: As mentioned earlier, turning PEX fittings after crimping can void the manufacturer’s warranty, leaving you responsible for any repairs or replacements.

Repairing Turned PEX Fittings

If you have accidentally turned a PEX fitting after crimping, it is important to take immediate action to repair the connection:

• Cut Out the Fitting: Use a pipe cutter to cut out the turned fitting.
• Install a New Fitting: Install a new PEX fitting and crimp it securely according to the manufacturer’s instructions.
• Test the Connection: Once the new fitting is installed, test the connection for leaks by running water through the system.

Recommendations: The Importance of Proper PEX Fitting Installation

To ensure a safe and reliable plumbing system, it is crucial to avoid turning PEX fittings after crimping. By following the proper installation techniques and using the correct tools, you can create secure connections that will last for years to come. Remember, the integrity of your plumbing system depends on the quality of your connections, and turning crimped fittings compromises that integrity.

Frequently Discussed Topics

1. What are the signs of a loose PEX crimp?

• Leaks
• Visible gaps around the fitting
• Movement of the fitting when pressure is applied

2. Can I use a wrench to tighten a loose PEX crimp?

• No, using a wrench can damage the fitting and weaken the connection.

3. How do I know if I have crimped a PEX fitting correctly?

• The crimp ring should be evenly crimped around the fitting, with no gaps or bulges.
• The fitting should be securely attached to the pipe, with no movement.