The diverter valve is a device that only appears in combi boilers. It allows the hot water to be redirected to the heating system (radiators, etc.) or to the hot water system (taps, etc.). This feature is what makes a combi boiler so popular due to the diverter valve allowing use of hot water and heating without the need for a cylinder
This part is present in 3 different boilers in the Glowworm range including the Glowworm ULTRACOM 2 24 , ULTRACOM 2 30 , ULTRACOM 2 35 .