Potable Water Vessels

Potable water vessels, sometimes referred to as potable expansion vessels, are designed to protect your closed hot water system from excessive pressure as the water heats up and cools down during the course of the cycle. They’re filled with air as well as water from the system, which they allow to function at the correct pressure at all times. If you have a combi boiler, you definitely have a potable water vessel.   

Our extended range of high-quality potable water expansion vessels is carefully selected from industry-leading brands like Altecnic, Zilmet and RWC (Reliance Water Controls). 

We offer both vertical and horizontal expansion vessels available in a huge range of sizes, from 0.16L mini vessels for small domestic applications all the way up to huge 1000L tanks for industrial applications, depending on the model. All our products are designed to strict British and international standards.  

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