What happens if you over crimp PEX

Over-crimping PEX (cross-linked polyethylene) pipe during installation can lead to several issues that may compromise the system's integrity and performance. Here are some potential consequences:

Pipe Damage: Over-crimping can compress the PEX pipe too much, leading to deformation or weakening of the material. This can result in cracks, leaks, or bursts over time, especially under pressure.

Flow Restriction: Excessive crimping can reduce the internal diameter of the pipe, restricting water flow. This restriction can cause reduced water pressure and efficiency in your plumbing system.

Fitting Failure: Over-crimping can also damage the brass or plastic fittings used in PEX systems. This can cause poor sealing, leading to leaks at the joints where the PEX pipe connects to the fittings.

Shortened Lifespan: Continuous stress on the pipe and fittings from over-crimping can reduce the overall lifespan of the PEX system, leading to premature failure and the need for repairs or replacements.

To avoid these issues, it's essential to use a proper crimping tool and follow the manufacturer's guidelines on crimp ring tightness. Using the right crimping tool and technique ensures a secure connection without over-stressing the pipe or fittings.

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