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Travis Perkins£7.75Visit shop Wavin Osma SquareLine gutter union 100mm white 4T809W
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The Wavin Osma SquareLine Gutter Union is designed for professional contractors and DIY enthusiasts installing or repairing 100mm (4 inch) square section guttering systems. Its primary benefit is providing a robust, leak-free connection between two gutter lengths, supported by wide, retained seals that simplify the installation process. Note that this component is specifically engineered for Osma SquareLine systems, meaning it may not provide a watertight fit when mixed with different gutter profiles or brands.
| Model Part Number | 4T809w |
|---|---|
| Brand | Osma |
This union is designed specifically for the Wavin Osma SquareLine system. Mixing brands is not recommended as profile dimensions and seal tolerances vary, which may cause leaks.
The markings indicate the correct positioning of the gutter ends to allow for thermal expansion. Positioning them correctly ensures the joint does not fail during seasonal temperature changes.
No, the Osma SquareLine union uses a push-fit design with retained seals and does not require solvent welding.
Yes, provided the conservatory uses a 100mm square guttering system compatible with the Osma SquareLine range.
Under normal conditions, the seals are designed to last the life of the guttering. Replace them only if they become damaged or deformed during installation or maintenance.
Check that the gutter ends are cut perfectly square and fully inserted into the union past the expansion mark. Ensure seals are not pinched or covered in grit.
Apply a light coat of silicone-based lubricant to the seals and ensure the gutter end is deburred to prevent catching on the rubber.
To install, ensure the gutter ends are cut square and deburred to prevent damaging the internal seals. Slide the gutter ends into the union up to the internal expansion mark. The system is designed to be a push-fit, but ensure it is properly supported by a bracket close to the joint to prevent sagging.
Compatibility is restricted to the Osma 100mm SquareLine range. For care, keep the seals free of debris during installation; once per year, inspect the joint to ensure no grit or leaves have forced the seal out of alignment, and clear away any accumulated dirt to maintain optimal water flow.
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