Alpha CB24 3.013389 diaphragm kit

An Alpha DHW diaphragm seal kit for use in the diverter valve section of Alpha's CB, HE, CD and SY range boilers. A directional water device in combi boilers, a diverter valve directs hot water into either 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. This diaphragm is designed to move a pin to operate a microswitch that sends a message to the boiler's PCB (printed circuit board).