Domakihub Push-Fit Plumbing Fittings: Save Time on Repairs Without Soldering
A step-by-step guide to connecting pipes quickly, cleanly, and without specialist tools.
Reviewed by Domakihub home & decor pros · 2026-06-23 · 5 min read
Push-fit fittings let you join plastic or copper water pipes in seconds with no solder, no flame, and no special adhesive — a genuine advantage when dealing with a burst pipe under a kitchen sink in a holiday rental at midnight. The video above walks through the technique on camera; this guide adds the preparation steps, common pitfalls, and the moments when you should call a licensed plumber instead of pressing ahead yourself. Whether you manage a home in Athens, a villa on Rhodes, or a boutique hotel on Crete, understanding push-fit plumbing will save you time and unnecessary repair bills.
What Are Push-Fit Fittings?
Push-fit fittings (also called push-to-connect or speedfit fittings) create a watertight seal the moment a pipe is pushed into the fitting body. Inside the fitting, a stainless-steel grab ring bites into the pipe surface and an O-ring forms the seal. The connection holds at typical domestic water pressures — usually up to 10 bar for quality branded fittings — and can be released again using a small plastic collet tool if you need to reposition the joint.
They are compatible with standard 15 mm and 22 mm plastic barrier pipe (the type used for central heating and hot/cold plumbing in most modern Greek properties) as well as plain copper pipe. They cannot be used on stainless steel, chrome-plated copper, or corrugated flexible hose.
When a Plumber Is Required
Push-fit work sits comfortably within DIY territory for like-for-like pipe repairs on cold-water feeds, waste pipes, and basic hot-water supply lines that are already isolated. You are essentially joining or repairing existing pipework — not modifying the pressure-limiting valve, the main stopcock, or anything connected to the gas supply.
However, if the leak originates at the boiler, at a gas-fed water heater (common in Greek properties), or at the mains entry point, stop there. These areas require a licensed installer (in Greece, a certified mechanical engineer or licensed plumber holding a professional licence under Greek Law 3982/2011). Similarly, any modification to the central heating circuit of a hotel or apartment building should be signed off by a qualified professional, as pressurised systems require correct commissioning and balancing.
How to Make a Push-Fit Connection: 5 Steps
- 1
Isolate the water supply and drain the pipe
Turn off the stopcock serving the section you are working on — usually under the sink or at the main isolation valve on the water meter. Open the tap at the lowest point to drain residual water. Push-fit fittings tolerate a small amount of moisture but a steady flow will prevent a good seal, so drain as thoroughly as you can before starting.
- 2
Cut the pipe cleanly and squarely
Use a rotary pipe cutter, not a hacksaw. A rotary cutter produces a perfectly square, burr-free end in one motion and costs under €15 at any hardware supplier (halkadiko). A hacksaw leaves a rough, angled cut that prevents the O-ring from seating correctly and almost guarantees a slow drip after the water is restored. Deburr the cut end lightly with a piece of fine sandpaper if needed.
- 3
Mark the insertion depth on the pipe
Hold the pipe next to the fitting and use a marker pen to draw a line at the point where the pipe end meets the outside edge of the fitting. This tells you exactly how far in the pipe needs to travel. On a 15 mm fitting, the typical insertion depth is around 23-25 mm; on a 22 mm fitting it is around 26-28 mm. Check the fitting manufacturer's datasheet if you are unsure — most quality fittings print the depth on the packaging.
- 4
Insert the pipe with a firm, straight push
Align the pipe end square with the fitting inlet and push steadily until the mark on the pipe aligns with the fitting face. You will feel the grab ring engage with a slight resistance and then release as the pipe seats fully. Do not twist or rock the pipe while inserting — push in a single straight motion. Check your mark is flush with the fitting: if you can still see a gap between mark and fitting, the connection is not fully seated and will leak.
- 5
Restore pressure and check for leaks
Turn the water supply back on slowly. Watch the joint closely for 60 seconds, then dry the fitting with a cloth and check again after 5 minutes. A correctly seated push-fit joint shows zero moisture. If you see weeping at the joint, isolate immediately — do not try to push the fitting further while pressurised. Drain, release the fitting with the collet tool, inspect the pipe end for any burr or deformation, and redo the connection from step 2.
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FAQ
- Can I use push-fit fittings on the hot-water pipes in my boiler room?
- Push-fit fittings rated for hot and cold use (check the fitting's temperature rating — quality fittings handle up to 95 °C) can be used on domestic hot-water supply pipes. However, any pipework immediately at or inside the boiler, or connecting to a gas-fired water heater, must be handled by a licensed plumber or mechanical engineer. The fitting itself is DIY-safe; the boiler connections are not.
- How do I disconnect a push-fit fitting without damaging it?
- Use the collet release tool (a small plastic clip, usually supplied with branded fittings or available for under €2). Slide it around the pipe at the fitting inlet, push the collet inward against the fitting body, and pull the pipe out at the same time. Never pull the pipe without pressing the collet first — you will deform the grab ring and the fitting will need to be replaced. Most quality fittings can be disconnected and reused several times.
- Are push-fit fittings approved for use inside walls or under floors in Greece?
- This depends on the fitting type and local building regulations. In general, push-fit fittings intended for concealed use (the manufacturer's datasheet will state 'suitable for embedding') can be used inside walls or under screed, but this is not true of all products. Where pipework will be inaccessible after finishing, many plumbers prefer compression or soldered fittings for long-term reliability. Check the specific product rating, and when in doubt, ask a licensed plumber before closing the wall.