DescriptionAqualusso Thermostatic Shower Mixer Valve – Replacement OEM PartThe Aqualusso Thermostatic Shower Mixer Valve is a high-quality replacement valve designed specifically for Aqualusso Opus and Alto shower cabins and steam showers. It is most commonly purchased by homeowners whose original mixer valve has failed, seized, started leaking, or no longer regulates temperature correctly, and who want to restore their existing shower cabin rather than replace the entire unit.This valve features a three-dial control layout, consistent across all variants. The bottom dial controls water temperature using a thermostatic cartridge to maintain a stable and safe temperature. The middle dial controls water flow and on/off operation. The top dial acts as a selector, allowing the user to switch between the shower functions installed in their cabin.To suit different shower cabin layouts, this product is available in three-output, four-output, or five-output versions, all selectable from the product options above. This allows you to choose the correct configuration to match your existing shower without modifying pipework or internal fittings. Where fitted, steam generators are supplied via a separate steam inlet and are not counted as an output.All variants are manufactured with 1/2” BSP threaded connections throughout, including hot water inlet, cold water inlet, steam inlet, and all outlet ports. This makes the valve suitable for straightforward replacement in most Opus shower cabins.If your existing shower cabin uses push-fit hose connections, optional screw-on push-fit adapters are available. These adapters simply thread onto the valve body and allow your existing hoses to be secured using jubilee clips, avoiding the need to replace hoses or pipework. When selected, the appropriate number of adapters is supplied to match the chosen output configuration.If your shower cabin does not use a steam generator — such as standard shower cabins, hydro massage showers, or open-top models — the steam inlet can be safely sealed using a blanking cap. A suitable brass blanking nut can be found here:This valve is manufactured to match original Opus specifications, making it ideal for direct OEM replacement without altering the shower control panel.Measurements & Technical DetailsControl Dial Centres: 100mm (centre to centre)Fixing Hole Diameters:Top hole: 30mmMiddle hole: 30mmBottom hole: 45mmConnections: 1/2” BSP threaded (standard)Operating Pressure: 1–3 bar (balanced)Minimum Flow Rate: 7.5 litres per minuteCompatible Aqualusso models include:Opus Shower Cabins: 01, 02,03,04Alto Hydro Showers 01,02,03,04,Alto Steam Showers: 80, 90, 95Alto Steam Shower Baths: ST, W1, W3Need Help Replacing Your Valve?If you’re unsure how to remove your existing valve or want guidance before ordering, a step-by-step replacement guide is available here: