Setup, Compatibility & Care
Before starting the installation, ensure the water supply to the tap is fully isolated. Use the appropriate spanners or hex keys to remove the tap handle to access the valve housing. Remove the old cartridge, clear any debris from the chamber, and insert the new 3540RCOLDNEX cartridge. Once replaced, tighten the retaining nut firmly—but avoid over-tightening to prevent damage. We recommend keeping the tap clean of limescale to extend the lifespan of your new valve. Always verify the model number matches your existing hardware before attempting installation.