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Worcester expansion vessels help maintain stable boiler pressure, prevent leaks, and protect vital internal components. Our selection includes compatible models for Worcester Greenstar, CDi, and Ri series, ensuring safe, efficient, and reliable boiler performance in every installation.
Sale!
Sale!1) What does a Worcester expansion vessel do?
A Worcester expansion vessel absorbs the increase in water volume as your heating system warms up, helping keep boiler pressure stable and protecting internal components.
2) Why is the expansion vessel important for boiler safety and performance?
Without a working vessel, pressure can rise too high when heating is on, triggering the pressure relief valve, causing leaks, lockouts, and stress on seals and parts.
3) Which Worcester boilers are these expansion vessels compatible with?
Our range includes expansion vessels compatible with popular Worcester Greenstar, CDi, and Ri series models. For an exact match, check your boiler model and GC number/part number.
4) Can a faulty expansion vessel cause leaks?
Yes. If the vessel fails, system pressure spikes can force water out through the pressure relief valve, which may look like a leak and can damage surrounding components over time.
5) What causes a Worcester expansion vessel to fail?
Usually it’s due to loss of air charge, a punctured diaphragm, age-related wear, or ongoing over-pressurisation of the system.
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