Prepare for Installation — Shut Off Main Water Supply and Drain Lines
Part of project
How to Replace a Leaky Angle Stop (Shutoff Valve) Under Your Sink · Step 1 of 8
In this video
Before starting any work, prepare the area under the sink. Begin by shutting off the hot and cold water supply valves, typically by turning them clockwise. Place a bucket or container underneath the plumbing to catch any water that will drain from the lines. Open the existing faucet to release any pressure and drain the remaining water. Finally, use an adjustable wrench to disconnect the hot and cold water supply lines from the shutoff valves.
Goal: Shut off water and disconnect supply lines
- If you cannot find or operate the shutoff valves under the sink, you will need to shut off the main water valve for the entire house.
- Keep a towel handy to clean up any spills immediately.
Used in this video
- Adjustable Wrench (Tool Type: Adjustable Wrench) — Disconnecting the water supply lines from the shutoff valves.
- Bucket (Tool Type: Plumbing Tool) — Catching residual water from the supply lines and P-trap.
- Towel (Material: Fabric) — Wiping up any water spills.
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FAQs
What's the most critical safety step before beginning the angle stop replacement?
The most critical step is always to shut off the main water supply to your house completely, not just the valve under the sink. This prevents potential flooding and ensures no water pressure is present while you're working on the pipe.
How long should a beginner expect this project to take, and what is the approximate cost?
For a beginner, this project typically takes 1 to 2 hours, allowing time for preparation and careful leak checks. The material cost is relatively low, mainly for the new angle stop and a new supply line, usually ranging from $20 to $40.
What tools do I need beyond basic wrenches for this project?
While adjustable wrenches and pliers are essential, 150-grit sandpaper is crucial for cleaning the copper pipe to ensure a good seal. You'll also need a bucket for draining water and plenty of absorbent towels (like WYPALL L40 or Scott Rags) to manage spills.
What's a common mistake beginners make that can lead to leaks after installation?
A common mistake is not thoroughly cleaning and preparing the copper pipe surface before installing the new compression fitting. Ensure the pipe is smooth, free of burrs, and clear of old compression ring residue using 150-grit sandpaper for a watertight seal.
Prepare for Installation — Shut Off Main Water Supply and Drain Lines
Part of project
How to Replace a Leaky Angle Stop (Shutoff Valve) Under Your Sink · Step 1 of 8
In this video
Before starting any work, prepare the area under the sink. Begin by shutting off the hot and cold water supply valves, typically by turning them clockwise. Place a bucket or container underneath the plumbing to catch any water that will drain from the lines. Open the existing faucet to release any pressure and drain the remaining water. Finally, use an adjustable wrench to disconnect the hot and cold water supply lines from the shutoff valves.
Goal: Shut off water and disconnect supply lines
- If you cannot find or operate the shutoff valves under the sink, you will need to shut off the main water valve for the entire house.
- Keep a towel handy to clean up any spills immediately.
Used in this video
- Adjustable Wrench (Tool Type: Adjustable Wrench) — Disconnecting the water supply lines from the shutoff valves.
- Bucket (Tool Type: Plumbing Tool) — Catching residual water from the supply lines and P-trap.
- Towel (Material: Fabric) — Wiping up any water spills.
Frequently Asked Questions
What's the most critical safety step before beginning the angle stop replacement?
The most critical step is always to shut off the main water supply to your house completely, not just the valve under the sink. This prevents potential flooding and ensures no water pressure is present while you're working on the pipe.
How long should a beginner expect this project to take, and what is the approximate cost?
For a beginner, this project typically takes 1 to 2 hours, allowing time for preparation and careful leak checks. The material cost is relatively low, mainly for the new angle stop and a new supply line, usually ranging from $20 to $40.
What tools do I need beyond basic wrenches for this project?
While adjustable wrenches and pliers are essential, 150-grit sandpaper is crucial for cleaning the copper pipe to ensure a good seal. You'll also need a bucket for draining water and plenty of absorbent towels (like WYPALL L40 or Scott Rags) to manage spills.
What's a common mistake beginners make that can lead to leaks after installation?
A common mistake is not thoroughly cleaning and preparing the copper pipe surface before installing the new compression fitting. Ensure the pipe is smooth, free of burrs, and clear of old compression ring residue using 150-grit sandpaper for a watertight seal.