Solar Expansion Vessel

Our solar expansion vessels are rated for a system operation temperature up to 120oc.

Solar expansion vessel.

Eco expansion vessel for solar heating systems. Most commonly expansion vessels are 18l or 25l in volume but we have serviced and installed much larger vessels. 130 c available in sizes 12ltr 18ltr 24ltr 35ltr and 50ltr. Expansion vessels are an important part and safety device of your solar hot water system.

During this period modern solar collectors may reach temperatures up to 200 c and consequently the fluid within the system can either evaporate or reach levels that can damage all the components within the solar energy system over time. Solar expansion vessels need to be sized correctly for your system. This rubber bag referred to as a diaphragm contains. An expansion vessel consists of a trapped volume of pressurised air gas inside a steel vessel which contains a rubber bag or diaphragm.

An expansion vessel must ensure the solar system can work safely particularly during periods when hot water is not being drawn off. Altecnic s range of solar expansion vessels are specifically designed for renewables applications where high temperatures can normally be reached and where depending on the kind of system glycol can be present. The expansion vessel in a solar hot water system has to be able to operate at higher temperatures than those a standard heating vessel are subjected to.