Expansion vessels

This crucial component helps to maintain the proper pressure in the system. Put simply, it acts as a kind of shock absorber, handling the expansion and contraction of water in your central heating system as it heats and cools.This vessel contains air, as well as water from the system. As the water heats up in the system, it expands within this tank. Acting like a spring, the air that is present in the vessel compresses. In this way, it absorbs the extra pressure, helping to keep the system stable. Operating temperature: -10 to 100 °C and Max operating pressure: 6 bar