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Professional Building Supplies£17.69Visit shop Hydrodif Mdpe Universal Transition Coupling - 25Mm
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B&Q£30.42Visit shop B&Q - Hydrodif Mdpe Universal Transition Coupling 25mm To 15mm Or 22mm CopperWras Approved
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The Hydrodiff Universal Transition Coupling MD25U is an essential component for professional plumbers and DIY enthusiasts needing to bridge the gap between 25mm MDPE pipe and standard 15mm or 22mm copper tubing. It offers the key benefit of extreme versatility, allowing connections across various pipe materials like lead, PVC, and stainless steel without requiring specialized adaptors. While highly effective for repair and installation, it is important to note that a pipe liner must be used on the MDPE side to ensure structural integrity and a long-lasting, leak-free seal.
| Model Part Number | MD25U |
|---|---|
| Brand | Hydrodif |
No special tools are required. You only need a standard wrench to tighten the nut once the pipe is inserted.
The fitting is primarily designed for cold water supply; check local plumbing regulations before using it on high-temperature heating circuits.
Yes, but you should inspect the internal nitrile O-ring for nicks or wear before re-installing.
No, a pipe liner for the MDPE side is typically sold separately and must be used for a secure connection.
The fitting is rated for standard domestic water pressure; consult the technical data sheet for specific PSI/Bar limits.
Ensure the pipe is pushed fully past the O-ring and verify that a pipe liner is installed correctly on the MDPE side.
Check the pipe for burrs, debris, or deformation. Ensure the pipe is cut squarely and use a small amount of non-petroleum lubricant if necessary.
Ensure the threads are aligned correctly. Do not use excessive force; if it is difficult to turn, back the nut off and re-thread.
To install, first prepare the pipe ends by cleaning them of any debris or oxidation. Always insert a pipe liner into the MDPE side of the connection before pushing the pipe into the coupling; failure to do this may lead to pipe deformation and eventual leakage under pressure. Ensure the fitting is pushed firmly against the pipe stop. For care, avoid using abrasive chemical cleaners on the exterior of the polypropylene body. If the fitting needs to be removed for system maintenance, simply unscrew the nut, check the nitrile rubber O-ring for signs of damage or perishing, and replace if necessary before re-tightening.
