If you have ever peered under your kitchen sink or tackled a DIY plumbing repair, you have likely encountered push-fit technology. These clever little fittings have revolutionised the plumbing trade in the UK, replacing the need for complex soldering or compression joints with a simple “push and click” mechanism.

While connecting them is a breeze, removing a push-fit plumbing fitting can sometimes feel like solving a puzzle. If you pull on the pipe, it simply tightens its grip. It is a brilliant design for water security, but a potential headache for a homeowner trying to fix a leak or reroute a pipe.

Whether you are dealing with grey plastic Speedfit connections, copper pipes, or brass SharkBite fittings, removing them does not require brute force. It requires technique. In this guide, we will walk you through exactly how to safely disconnect these fittings without damaging your pipework, ensuring your plumbing tasks run as smoothly as the water in your taps.

Understanding the Push-Fit Mechanism

Before you grab your toolbox, it helps to understand what is happening inside the joint. Push-fit fittings utilize a stainless steel grab ring (often called a collet) with internal teeth. When you insert the pipe, these teeth angle inwards, allowing the pipe to slide in. However, when you try to pull the pipe out, the teeth dig into the material, locking it firmly in place against an O-ring that creates the watertight seal.

To remove the Fitting, you must retract these teeth. This is usually done by compressing the protruding collar (the collet) against the Fitting’s body. Once the collar is depressed, the teeth release their grip, and the pipe should slide out freely.

Tools You Will Need

While many plastic push-fit fittings can technically be removed by hand, having the right tools makes the job significantly easier and reduces the risk of damaging the Fitting if you plan to reuse it.

• Disconnect Clip or Release Tool: These are small, horseshoe-shaped plastic clips. They are specific to the pipe size (usually 15mm or 22mm).
• Disconnect Tongs: For brass fittings like SharkBite, special tongs can provide the leverage needed to compress the release collar.
• HepKey: If you are dealing with Hep2O fittings, you cannot simply press a collet; you will need a specialized HepKey tool to unlock the internal grab ring.
• Adjustable Spanner: Useful for ensuring water supply valves are fully turned off.
• Bucket and Towels: Even if you have drained the system, residual water will almost always escape when you break the seal.
• Marker Pen: Essential for marking insertion depth if you are reinstalling.

Step-by-Step Guide to Removal

Step 1: Safety and Preparation

Before touching any fittings, you must isolate the water supply. Locate the stopcock or isolation valve for the specific fixture you are working on, and turn it off. Once isolated, open the tap to drain the excess water and depressurise the system.

Warning: Never attempt to remove a fitting on a pressurised system. Not only will you get soaked, but the pressure can also make it physically impossible to compress the collet to release the pipe.

Step 2: Identify Your Fitting Type

Look closely at the Fitting.

• Standard Plastic (e.g., John Guest Speedfit): These usually have a screw cap and a visible grey or white collet where the pipe enters.
• Hep2O: These look smoother and do not have a protruding collet that you can press with your fingers.
• Brass Push-Fit (e.g., SharkBite): These have a tan or plastic collar inside the brass housing.

Step 3: The Removal Process

For Standard Plastic Fittings (Speedfit):

1. If there is a locking screw cap, twist it to the unlock position (usually anti-clockwise) until it clicks or stops.
2. Locate the collet (the small ring around the pipe).
3. Using your fingers or a release tool, push the collet firmly into the fitting body. You must keep this pressed down.
4. While holding the collet in, pull the pipe straight out. If it is stubborn, a gentle twisting motion can help break the seal.

For Hep2O Fittings:

1. You cannot remove these with your fingers alone. Clip the appropriate HepKey tool around the pipe next to the Fitting.
2. Slide the HepKey firmly against the Fitting. This engages the internal release mechanism.
3. Pull the pipe away while keeping pressure on the HepKey.
4. If the fittings are too close together for a standard HepKey, you may need a slimline HepTool.

For Brass/SharkBite Fittings:

1. Snap the disconnect clip onto the pipe just above the Fitting.
2. Use the clip to press down evenly on the release collar.
3. If the Fitting is tight, use disconnect tongs to firmly squeeze the collar down.
4. Pull the pipe out of the fitting smoothly.

Troubleshooting Common Issues

Even with the correct technique, things do not always go to plan. Here is how to handle stubborn connections.

The Pipe Won’t Budge

If the pipe feels stuck, do not yank it. This usually means the collet isn’t fully depressed. Ensure you are pressing the collar squarely and evenly into the Fitting. If you are working with old copper pipes, limescale or paint buildup might be preventing the collet from sliding back. Gently clean the pipe near the Fitting with a scourer before trying again.

The Fitting is damaged.

If the grab ring has bitten too deeply into a plastic pipe, it may have raised a burr that catches as you try to pull it out. In this scenario, you may have to cut the pipe. Ensure you cut it as close to the fitting as possible to preserve pipe length for the repair.

Dealing with Paint

It is common in older London homes to find pipes painted over. Paint can glue the collet mechanism shut. You will need to carefully scrape away any paint from the Fitting’s entry point and the pipe itself to allow the mechanism to move.

Pro Tips for Reinstallation

If you plan to reuse the Fitting or install a new one, proper preparation is vital to prevent leaks.

• Check the O-Ring: If you are reusing a fitting, look inside. If the black rubber O-ring looks chewed up or displaced, discard the Fitting and buy a new one. It is not worth the risk of a leak.
• Cut Square: When preparing the pipe, use dedicated pipe cutters. Do not use a hacksaw. Hacksaws leave jagged edges.
• Deburr the Pipe: This is the most important step. If the end of your pipe has a sharp edge, it can slice the O-ring inside the Fitting when you push it in. Use a deburring tool to smooth the end of copper or plastic pipes.
• Mark the Depth: Before pushing the pipe in, mark the insertion depth on the pipe with a pen (usually about 25mm-28mm, but check the manufacturer’s guide). This gives you a visual confirmation that the pipe has been fully pushed home.

When to Call a Professional

Push-fit fittings are designed to be user-friendly, but plumbing can be unpredictable. If you encounter a fitting that is completely seized, or if you discover that the pipework itself is corroded or damaged beyond a simple DIY repair, it is time to call in expert help.

Additionally, if the Fitting is in a hard-to-reach area—like under floorboards or behind a tiled wall—the risk of causing secondary damage increases. A professional plumber will have the specific removal tools and the experience to extract the Fitting without causing a larger problem.

For reliable assistance, you can always count on Ontime Plumbers for your Local London Emergency Plumber services. Our team is experienced with all types of modern and traditional pipework, ensuring your home remains dry and secure.

Frequently Asked Questions

Can I reuse a push-fit fitting after removing it?

Yes, most push-fit fittings (like Speedfit and SharkBite) are designed to be demountable and reusable. However, you should always check the internal O-ring and the stainless steel teeth. If the teeth are bent or the rubber is damaged, replace the Fitting.

Do I need a special tool to remove a John Guest Speedfit fitting?

Technically, no. You can usually depress the collet with your fingers. However, the specific release tool makes it much easier, especially if the Fitting is in a tight space or if your hands are wet.

Why is my push-fit Fitting leaking after I put it back on?

Two things usually cause this: either the pipe was not pushed in fully (past the O-ring), or a sharp edge on the pipe damaged the O-ring during insertion. Always deburr your pipes!

Conclusion

Mastering the art of removing a push-fit plumbing fitting is a great skill for any homeowner. It allows you to fix minor leaks, change taps, or cap off pipes during renovation work with confidence. Remember, the secret is in the “push and pull” technique, not in brute strength.

Always prioritize safety by depressurising your system, and take the time to prepare your pipes properly before reconnecting them. By following these steps, you can handle your plumbing maintenance like a pro. However, if you are ever unsure or the job turns out to be bigger than expected, professional help is just a phone call away.