The Potterton 5111137 Diaphragm Service Kit is a replacement boiler component designed to restore correct operation of the diverter valve in compatible combination boilers. The diaphragm works within the diverter valve assembly, helping to switch water flow between the central heating and domestic hot water circuits as required.
Manufactured to match the original component specifications, this service kit provides a reliable replacement solution for boiler maintenance and repairs. Suitable for a range of Baxi and Potterton boiler models.