Vaillant 014731 central heating service valve

This Vaillant replacement diverter valve is suitable for ecoMAX VU (condensing) and ecoMAX VUW (condensing) boilers. A directional water device in combi boilers, a diverter valve directs hot water into a heating system or a hot water system. This feature means that combis are able to provide both heating and hot water without the need for a storage cylinder.