Introduction to PEX Crimping Without a Tool
Crimping PEX (cross-linked polyethylene) tubing is typically done using a specialized crimping tool. These tools ensure a uniform crimp which secures PEX fittings to the tubing, preventing leaks. However, if you find yourself without a crimping tool and need an emergency solution, this guide will explain how to crimp PEX without a specialized tool, although this should only be considered as a temporary fix.
Steps to Manually Crimp PEX Without a Tool
Before starting, it is important to note that manufacturers usually recommend using the proper tools for crimping PEX connections. Improvising without the correct tools might not achieve a reliable seal and could lead to potential leaks and damage. Nonetheless, here are the steps for a temporary solution:
Materials Needed
- PEX tubing
- PEX fittings (barbed)
- Copper crimp rings
- Locking pliers (e.g., Vise-Grips)
- Pipe cutter or a suitable cutting tool
- Go/no-go gauge (optional, for checking the connection)
Step 1: Cutting the PEX Tubing
Ensure the PEX tubing is cut straight across and cleanly. A clean cut will help ensure that the fitting can be inserted properly, with no ridges or obstructions. A burr-free end also helps prevent leaks at the connection point.
Step 2: Inserting the Fitting
Insert the PEX fitting into the tubing. It should go in smoothly up to the shoulder of the fitting. If it doesn’t fit, confirm that you’re using the correct size of tubing and fitting, and that the tubing has been cut straight.
Step 3: Sliding on the Crimp Ring
Slide a copper crimp ring onto the PEX tubing, and then over the fitting, positioning approximately 1/4 inch from the end of the tubing. Ensure the crimp ring is centered over the barbs of the fitting for a secure fit.
Step 4: Crimping with Locking Pliers
Adjust the locking pliers to their maximum setting to make sure they apply pressure evenly around the ring. Carefully position the pliers over the crimp ring and squeeze the pliers to tighten them around the ring, applying even pressure around the circumference. You want to compress the ring sufficiently enough so it tightly secures the tubing onto the fitting.
Step 5: Inspecting the Connection
After crimping, inspect the connection for any gaps or areas that might not have compressed fully. If possible, use a go/no-go gauge to check the connection. If the connection passes the gauge test, you have a well-crimped fitting.
Step 6: Testing the Connection for Leaks
Before relying on the connection, test it with water pressure. If there are no leaks, your temporary fix might be sufficient in an emergency.
Considerations and Closing Thoughts
This improvised method is not a substitute for professional crimping tools and methods. It should not be relied upon for long-term installations or in areas where water damage could be critical. Always follow local plumbing codes and regulations, which may not consider manual crimping methods to be compliant.
For a permanent and reliable solution, acquire a proper PEX crimping tool and redo the connections. These are not expensive compared to potential water damage costs from failed connections. Always prioritize safety and efficacy over convenience when working with plumbing systems.
If you find yourself in a situation where you need to improvise, this guide provides an emergency fix, but remember to replace any improvised connections with properly crimped ones as soon as possible.