Skip to main content
Stesso
Project

Preparation — Shut Off the Shower's Water Supply

Beginner3 hours

Part of project

Delta Monitor Shower Faucet Installation & Replacement Guide · Step 1 of 5

Helpful?

In this video

Before starting, prepare for the project by understanding its complexity. This is an advanced task that may require professional help. Ensure the main water supply to the home is completely shut off. To relieve any remaining water pressure in the lines, turn the shower handle to the open position and let any residual water drain out.

Goal: Prepare for valve removal

  • Shut off the main water supply before beginning any plumbing project.
  • If you don't know where your main water shutoff is, contact your local water company for assistance.
  • Open the valve to relieve water pressure after shutting off the main supply.
30.7K views2010 minutes
This Old House

2.2M subscribers

View Channel

FAQs

What specific tools are essential for replacing a Delta Monitor shower faucet?

You'll primarily need a Phillips head screwdriver for trim removal and installation. A crucial specialized tool is an Arcan Hardened 3 in. Gear Puller AS3GP, which is often necessary for removing a stubborn old valve cartridge. Have penetrating oil and silicone grease ready as well.

What's the most important safety precaution I need to take before starting this project?

The most critical step is to completely shut off the water supply to the shower. This can be done at the main house shut-off valve or by turning off individual hot and cold water lines if available. Double-check that no water flows from the shower before proceeding to prevent flooding.

I'm a beginner. How difficult is this project, and how long should I expect it to take?

This project is classified as beginner difficulty, meaning it's manageable for those new to DIY. The estimated time for completion is around 3 hours. However, this can vary depending on the condition of your old faucet and any unexpected issues, so allow some extra time.

What should I do if my old shower cartridge is stuck and won't come out?

A common issue is a stubborn old cartridge. First, try applying penetrating oil around the cartridge base and let it sit for a few minutes to help loosen it. If it still doesn't budge, you will likely need to use a gear puller, such as the Arcan Hardened 3 in. Gear Puller AS3GP, to extract it safely without damaging the valve body.

Transcript
Hide

The first step is preparation. Make sure you understand the scope of this project before you begin. Moin recommends watching this video first. It explains how to remove an old tub shower valve. Then, watch our installation video, which overviews how to install a new Moin one-handled Positet valve. This is an advanced project, so you may need help from a professional plumber. Allow plenty of time for this job. It will take at least an hour to remove the old valve. Two people are recommended for removal. Before starting any plumbing project, shut off your home's main water supply. If you don't know where it's located, contact your local water company for assistance. Also, open the valve by turning on your tub shower to relieve the water pressure. If you have questions at any time, please call Moin Consumer Services.

Auto-generated transcript. May contain errors.