PolyFast 21-27mm x 25mm Universal Transition Coupler - Polypipe Polylink (Black) - 4842127

The Polypipe PolyFast Polylink Universal Transition Coupler 21–27 mm x 25 mm (4842127) is a robust, versatile fitting designed to connect 25 mm MDPE pipe to a wide range of legacy or irregular pipe materials sized between 21 mm and 27 mm. Perfect for renovation or upgrade projects, this universal coupler delivers a tight, leak-free seal using a secure compression mechanism. Engineered with durable polypropylene and approved for potable water use, it’s ideal for underground cold water supply lines.

• Universal transition coupler – connects 25 mm MDPE to 21–27 mm legacy or mixed pipe materials
• Compression fitting – tool-free, secure, and easy to install
• Black body – impact-resistant and suitable for below-ground installations
• Ideal for adapting old or non-standard plumbing to modern MDPE systems
• WRAS-approved – suitable for use with drinking water systems