This Vaillant Central Heating Service Valve (part number 014731) is a genuine replacement part for Vaillant boilers. It is suitable for Vaillant ecoMAX 613/2 E and other ecoMAX models, including Ecomax VU (condensing) and Ecomax VUW (condensing) boilers. As a diverter valve, it directs water flow within the combi boiler system, enabling it to provide both heating and hot water simultaneously without a storage cylinder. Please ensure that boiler spare parts are fitted by a certified Gas Safe engineer. Orders placed before 4 pm are typically dispatched for next business day delivery.