Techniques for Removing PEX Fittings: A Comprehensive Guide

PEX (cross-linked polyethylene) has become increasingly popular due to its flexibility, easy installation, and resistance to build-up and scaling. Proper removal of PEX fittings is essential for tasks such as remodeling, repairing, or correcting faulty connections. This guide will detail different types of PEX crimp rings and how to remove them efficiently using various methods.

PEX Pro-PEX Rings and Fittings

Pro-PEX fittings and rings create compression seals through an expansion style. While these fittings are not commonly used by homeowners due to the expense of specialized tools, they are easy to remove using simple tools.

Steps to Remove Pro-PEX Fittings

Cutting the Fitting: Cut the fitting either spirally or at an angle. Cutting spirally or at an angle is more suitable to provide grip and space for tools. Insert Screwdriver: Insert a screwdriver into the cut and twist to split the ring. Pull the Ring Off: Pull the ring off once it's split. Using Heat: Another method involves using heat. Apply heat to the PEX ring to soften and expand it, then twist it off.

Choosing the Right Tools:

A regular hacksaw or miniature hacksaw is ideal for cutting PEX rings without fine-toothed hacksaws, which can damage the soft plastic material. A razor knife is a good alternative for cutting PEX tubing, but it may leave some scratches. Pliers are useful for removing the remaining end of the PEX tube from the fitting.

Stainless Steel Crimps

Stainless steel crimps are more challenging to remove due to their nubs and punches that form a tight seal. Here are the steps to remove stainless steel crimps:

Materials Needed:

PEX clamp cutter Pliers Rag

Steps to Remove PEX Fittings with Stainless Steel Crimps

Depressurize the System: Ensure the water supply is shut off to avoid leaks. Prepare the Area: Clean the area around the cinch clamp to ensure a smooth removal process. Slide the Tool Under the Ring: Use the PEX clamp cutter to hook and squeeze the ring until it clicks open. Remove the Ring: Use pliers if the ring doesn't drop off and wear gloves to prevent cuts from sharp edges.

Copper Crimp Rings

Copper crimp rings are easily removed with the right tools. Decrimpers are designed to cut through the copper rings and fittings.

Materials Needed:

Decrimper Pliers Heat gun

Steps to Remove PEX Fittings with Copper Crimp Rings

Cutting the Crimp Ring: Use a decrimper to cut through the copper ring, positioning the anvil side until it covers the ring. Squeeze the handles firmly together. Removing the PEX Pipe: If any PEX tubing remains, use pliers to remove it. Alternatively, use a heat gun to make the tubing elastic, allowing it to slide off the fitting.

Conclusion

Understanding the different types of PEX crimp rings and the methods to remove them is crucial for maintenance and repair tasks. While it can be a challenging process, the right tools and techniques make it manageable. Whether you are a professional plumber or a DIY homeowner, knowing these techniques can save time and prevent costly mistakes.