Disassemble the Mixing Valve Connection — Disconnect the Water Supply Lines
Part of project
Replace a Bathroom Faucet: Easy Guide · Step 2 of 5
In this video
Using an adjustable wrench, carefully loosen the large hexagonal nut that connects the cold water supply pipe to the mixing valve. Position a towel underneath the connection to catch any remaining water that will drip out. Once the nut is broken loose with the wrench, you should be able to finish unscrewing it by hand. Pull the pipe away from the valve to expose the internal washer and connection point.
Goal: Access Cold Water Inlet
Used in this video
- Adjustable Wrench — Loosening and tightening the nut on the mixing valve.
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FAQs
Do I really need specialized tools like a basin wrench to replace my bathroom faucet?
While an adjustable wrench can sometimes work, a basin wrench (like the Husky or TEKTON models mentioned) is highly recommended. It's specifically designed to reach and loosen/tighten mounting nuts in the tight, awkward spaces under your sink, making the job significantly easier and less frustrating for beginners.
What should I do if the water shut-off valves under my sink are stuck or won't turn off completely?
If the under-sink valves are stuck or faulty, you'll need to locate and turn off the main water supply to your entire house before proceeding. If you're uncomfortable doing this or if the main valve is also problematic, it's best to call a professional plumber to avoid potential water damage.
How can I ensure I don't have any leaks after installing my new faucet and drain?
To prevent leaks, make sure all threaded connections are hand-tightened first, then snugged with a wrench, avoiding overtightening which can crack parts. Always use plumber's tape (Teflon tape) on threaded supply line connections and plumber's putty or the provided gasket for the drain assembly to create a watertight seal.
Is it okay to reuse my old water supply lines with the new faucet, or should I replace them?
It is strongly recommended to replace old water supply lines with new ones when installing a new faucet. Old lines can degrade, become brittle, or leak after being disturbed, even if they look fine. Many new faucets come with fresh supply lines, or they are inexpensive to purchase separately.
Disassemble the Mixing Valve Connection — Disconnect the Water Supply Lines
Part of project
Replace a Bathroom Faucet: Easy Guide · Step 2 of 5
In this video
Using an adjustable wrench, carefully loosen the large hexagonal nut that connects the cold water supply pipe to the mixing valve. Position a towel underneath the connection to catch any remaining water that will drip out. Once the nut is broken loose with the wrench, you should be able to finish unscrewing it by hand. Pull the pipe away from the valve to expose the internal washer and connection point.
Goal: Access Cold Water Inlet
Used in this video
- Adjustable Wrench — Loosening and tightening the nut on the mixing valve.
Frequently Asked Questions
Do I really need specialized tools like a basin wrench to replace my bathroom faucet?
While an adjustable wrench can sometimes work, a basin wrench (like the Husky or TEKTON models mentioned) is highly recommended. It's specifically designed to reach and loosen/tighten mounting nuts in the tight, awkward spaces under your sink, making the job significantly easier and less frustrating for beginners.
What should I do if the water shut-off valves under my sink are stuck or won't turn off completely?
If the under-sink valves are stuck or faulty, you'll need to locate and turn off the main water supply to your entire house before proceeding. If you're uncomfortable doing this or if the main valve is also problematic, it's best to call a professional plumber to avoid potential water damage.
How can I ensure I don't have any leaks after installing my new faucet and drain?
To prevent leaks, make sure all threaded connections are hand-tightened first, then snugged with a wrench, avoiding overtightening which can crack parts. Always use plumber's tape (Teflon tape) on threaded supply line connections and plumber's putty or the provided gasket for the drain assembly to create a watertight seal.
Is it okay to reuse my old water supply lines with the new faucet, or should I replace them?
It is strongly recommended to replace old water supply lines with new ones when installing a new faucet. Old lines can degrade, become brittle, or leak after being disturbed, even if they look fine. Many new faucets come with fresh supply lines, or they are inexpensive to purchase separately.