Heatrae Sadia Expansion Vessel 95607988

The Heatrae Sadia 95607988 is a 2 litre expansion vessel rated at 4.1 bar, used in Heatrae Sadia and Heatstore unvented water heaters. It absorbs the expansion of heated water within the cylinder, limiting pressure rise and protecting the relief valve and associated components. It is listed under water heater spares in the expansion vessel category.

• Water discharging from the pressure and temperature relief valve during heating cycles
• System pressure rising sharply when the cylinder heats up and falling again as it cools
• Water weeping from the vessel's air charge valve, indicating a failed internal diaphragm
• The vessel feels heavy or waterlogged when compared with a correctly charged unit
• Repeated pressure fluctuations on the gauge with no other cause identified

• Confirm your appliance model against the fit list above before ordering
• Check the capacity and pressure rating of the vessel being replaced match 2 litres and 4.1 bar
• Confirm the vessel is accessible and that the connection can be remade without disturbing other components
• Work on unvented hot water systems should be carried out by a competent person