Unveiling the secrets: a step-by-step guide to connecting compression fittings to copper pipes

Connecting compression fittings to copper pipe is a crucial skill for any plumber or DIY enthusiast. These fittings provide a secure and leak-free connection, making them ideal for various plumbing applications. In this comprehensive guide, we will delve into the step-by-step process of how to connect compression fittings to copper pipe, ensuring a flawless installation.

Materials and Tools You’ll Need

• Copper pipe
• Compression fittings (nut, ferrule, and body)
• Pipe cutter or hacksaw
• Deburring tool
• Adjustable wrench
• Teflon tape (optional)

Step 1: Prepare the Copper Pipe

a. Cut the Pipe: Use a pipe cutter or hacksaw to cut the copper pipe to the desired length.

b. Deburr the Pipe: Use a deburring tool to remove any burrs or sharp edges from the cut end of the pipe. This ensures a smooth connection and prevents leaks.

Step 2: Apply Teflon Tape (Optional)

For added security, you can apply a layer of Teflon tape around the male threads of the compression fitting body. This helps create a watertight seal.

Step 3: Assemble the Compression Fitting

a. Insert the Ferrule: Slide the ferrule onto the end of the copper pipe.

b. Tighten the Nut: Hand-tighten the compression nut onto the ferrule.

Step 4: Insert the Pipe into the Fitting Body

Insert the ferrule-covered end of the copper pipe into the body of the compression fitting.

Step 5: Tighten the Nut

Using an adjustable wrench, tighten the compression nut onto the fitting body. Do not overtighten, as this can damage the fitting or the pipe.

Step 6: Check for Leaks

Turn on the water supply and check for any leaks. If there are leaks, tighten the compression nut further until the leak stops.

Step 7: Secure the Fitting (Optional)

For added stability, you can use a pipe clamp to secure the compression fitting to the wall or ceiling.

Troubleshooting

• Leakage: If you experience leakage after tightening the compression nut, it could be due to:
• Incorrectly installed ferrule
• Damaged or misaligned fitting
• Overtightened nut
• Damaged copper pipe

• Difficulty Tightening: If you have difficulty tightening the compression nut, it could be due to:
• Stripped threads on the nut or fitting
• Insufficient clearance for the wrench
• Obstruction inside the fitting

In a nutshell: Mastery of Compression Fitting Installation

By following these steps, you can confidently connect compression fittings to copper pipe, ensuring a leak-free and secure connection. With practice and attention to detail, you will become a master of compression fitting installation.

Common Questions and Answers

1. What is the purpose of a ferrule in a compression fitting?

The ferrule is a metal ring that compresses against the copper pipe when the compression nut is tightened. This compression creates a watertight seal.

2. How tight should I tighten the compression nut?

Tighten the compression nut hand-tight, then use an adjustable wrench to tighten it further until you feel resistance. Do not overtighten.

3. Can I use compression fittings on PEX pipe?

No, compression fittings are designed specifically for copper pipe. Using them on PEX pipe can result in leaks.

4. What is the maximum pressure rating for compression fittings?

Compression fittings typically have a pressure rating of up to 150 PSI.

5. How long do compression fittings last?

With proper installation and maintenance, compression fittings can last for decades.