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Install PEX Pipe to Valve — Prepare for New Valve Installation

Intermediate16 hours

Part of project

How to Convert a 3-Handle Shower Faucet to a Single-Handle Valve · Step 5 of 9

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In this video

Measure from the stud to the center of the shower valve and transfer that measurement to the top plate of the wall frame. Drill a hole through the top plate at the marked spot. Wrap the threads of the shower valve outlet with Teflon tape. Feed the prepared PEX pipe up through the wall and the new hole. Screw the PEX fitting onto the valve by hand, then use a crescent wrench to tighten it securely.

Goal: Plumbing Pipes Installation (Installing new plumbing pipes.)

Used in this video

  • Tape MeasureMeasuring the pipe location.
  • PencilMarking the drill location.
  • Drill with Auger BitDrilling a hole through the top plate for the PEX pipe.
  • Crescent WrenchTightening the PEX fitting onto the shower valve.
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FAQs

This project is rated 'intermediate.' What specific skills or prior experience are essential for successfully converting a three-handle shower faucet?

An intermediate rating means you should be comfortable with basic plumbing tasks, including cutting pipes and making secure connections. Experience with soldering copper pipes is crucial, as the new valve typically requires soldered connections. You'll also need basic carpentry skills for opening and repairing the access wall.

The estimated time is 16 hours. What aspects of this conversion project take the most time, and can it be completed in a single weekend?

The 16-hour estimate accounts for significant stages like creating wall access, carefully removing the old valve, precisely soldering the new one, and thorough leak testing. Repairing and finishing the access wall also adds considerable time. While possible to do in a weekend, spreading it over a few days allows for drying times and meticulous work, especially for leak checks.

What are the critical safety considerations, especially regarding soldering and working with plumbing behind the wall?

Always turn off the main water supply before starting. When soldering, ensure excellent ventilation to disperse fumes and have a fire extinguisher nearby; protect surrounding studs with a heat shield. Wear appropriate PPE, including safety glasses and gloves. Thoroughly drain pipes to avoid steam buildup during soldering.

What are the most common mistakes DIYers make during this type of shower valve conversion, and how can they be avoided?

A common mistake is improper soldering, leading to leaks. Ensure pipes are clean, flux is applied correctly, and joints are heated evenly. Another error is not thoroughly leak testing before closing the wall; pressurized water should run for several hours. Also, double-check the new valve's orientation and depth before securing it.

Install PEX Pipe to Valve — How to Convert a 3-Handle Shower Faucet to a Single-Handle Valve (Step 5, Video 2) | Stesso