This Baxi branded inlet assembly is for use with the diverter valve in Baxi’s Duo-tec, Duo-tec ErP, Platinum, Platinum ErP, Main Eco Elite, Main Eco Elite ErP, Gold, Gold ErP, Heatmax, Promax and Promax ErP boilers. A directional water device in combi boilers, the 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.