Altecnic offer a complete range of expansion vessels to meet the requirements of most heating systems and for use with potable water. The expansion vessels are manufactured to meet the requirements of PED 97/23/EC Directive and BS EN 13831:2007 ‘Closed expansion vessels with built in bladder for installation in water’.

Design

Manufactured in carbon steel with a two or three part weld construction. Pre-pressurised air chamber with synthetic rubber compound bladder. Sizes 60 to 1000 litres (except 140 litres) have a replaceable bladder. The internal surfaces of the vessel in contact with the water are coated against corrosion. External surfaces have a blue durable powder coated finish. Suitable for temperatures up to 70?C, resistant to ethylene or propylene glycol mixtures and has low gas permeability. Altecnic expansion vessels are all tested according to the Pressure Systems Directive.