How to Install Compression Fittings on a Copper Line

Compression fittings are used in areas where pipes may need to be disconnected to replace plumbing fixtures, such as faucets.

Compression fittings are a type of plumbing connection that does not require heat, tape or glue for installation. They have a fixture, compression ring and a nut that tightens the pipe between the compression ring and the fixture to create a seal. Compression fittings are appropriate for use with soft pipes, such as copper, in areas where pipes may need to be disconnected to replace plumbing fixtures, such as faucets, toilets or refrigerator water lines.

Things You'll Need

• Pliers or appropriate-sized wrenches

Instructions

1. Push the nut over the end of the copper pipe.

2. Push the compression ring over the end of the copper pipe

3. Push the copper pipe onto the fitting until it is tight against the stop at the end of the fitting.

4. Slide the compression ring over the end of the pipe where the copper pipe is on top of the compression fitting.

5. Slide the nut over the compression ring and tighten the nut with pliers or an appropriate-sized wrench.

Tips & Warnings

• Check the connection for at least 24 hours after installation for leaks.

• Do not overtighten compression fittings or the copper pipe may split.

References

• The Natural Handyman: No Sweat ... Just Use a Compression Fitting