Skip to main content

Disconnecting Water Supply Lines — Disconnect Water Supply Lines

Beginner6 hours

Part of project

How to Replace a Mobile Home Garden Tub Faucet · Step 3 of 10

Helpful?

In this video

Now, disconnect the two flexible water supply lines that run from the shutoff valves to the faucet. Use a small pair of pliers or an adjustable wrench to loosen the compression nuts on the supply lines where they connect to the shutoff valves. Turn the nuts counter-clockwise. There may be a small amount of water left in the lines, so keep your bucket nearby. Once both lines are disconnected, they will remain attached to the faucet but free from the wall.

Goal: Detach faucet supply lines from shutoff valves

  • You can use a backup wrench on the valve body to prevent it from twisting if the connection is very tight.

Used in this video

  • Pliers (Pliers_Type: Channel-Lock)Loosening the compression nuts on the water supply lines.
  • Wrench (Wrench_Type: Adjustable Wrench) · optionalAn alternative to pliers for loosening the supply line nuts.
18.2K views2465 minutes
This Old House

2.2M subscribers

View Channel

FAQs

The project states 6 hours for a beginner. Is it really that involved, and what contributes to the longer time estimate?

While the individual steps are beginner-friendly, accessing plumbing in mobile homes can be challenging due to tight spaces. Unexpected issues like corroded nuts or limited working room contribute to the 6-hour estimate. Taking your time, especially during initial access and thorough leak testing, is crucial for a successful outcome.

Is a basin wrench truly necessary for this job, or can I get by with standard adjustable wrenches?

A basin wrench (like the TEKTON WRN92004 listed) is highly recommended and often necessary for mobile home garden tub faucets. It's specifically designed to reach and loosen nuts in very tight, awkward spaces that standard adjustable wrenches often cannot access, making the removal and installation significantly easier.

What are the most crucial safety precautions I need to take before starting this faucet replacement?

The most critical step is completely shutting off the main water supply to your mobile home and then draining the lines by opening nearby faucets. Additionally, ensure you have adequate lighting (a headlamp is excellent) and plenty of absorbent towels like WYPALL L40 on hand for any unexpected water spills during the process.

What common mistakes do beginners make when replacing a mobile home garden tub faucet, and how can I avoid them?

A common mistake is cross-threading water supply lines or not using enough Teflon tape, which leads to leaks. Always align connections carefully by hand before tightening with a wrench, and apply 3-5 wraps of Teflon tape clockwise to threaded pipe connections to ensure a good, watertight seal.