Eres Expansion Vessels

An Eres expansion vessel is a small water tank that is incorporated into pressurised heating and hot water systems. Its purpose is to regulate the pressure and it does this by expanding and contracting according to the volume of water within its flexible chamber. Due to the way in which it is manufactured, high hygiene standards are maintained at all times, as the water within the chamber is never in contact with the steel of the outer vessel. This means it can cope with high internal pressures... Read More

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