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 [...]
The boiler expansion vessel The expansion vessels on today's unvented boilers is a very important part of the boiler, but for some reason seems to get overlooked when a service is carried out. The expansion vessels take up the expansion of the water within the boiler when it is running. As the water heats up, it starts to expand and needs somewhere to go, this is where the [...]
Duval Heating 1985 -2022