Expansion Vessel The expansion vessel has changed the way central heating systems work. Not so long ago, most central heating systems installed in the United Kingdom were open vented. To explain what open vented means, as a boiler starts to heat up, the water within, the system starts to expand, and the expansion needs to go somewhere, so you have an expansion pipe, which normally [...]
Expansion Vessels Expansion vessels are a small vessel that is generally used to contain excess water pressure within domestic and closed water heating systems. Thermal expansion is created during the heating of water, which can lead to problems if the system does not have a way to store some of the excess amounts of water and steam. The vessel itself is designed to have two separate [...]
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