Altecnic Reflex Heating Expansion Vessel HV140C

The Reflex 140 litre Heating Expansion Vessel is an expansion vessel from Altecnic, part of the Reflex range of vessels for heating installations. It is fitted on sealed heating systems to absorb the increase in water volume as the system heats up, limiting the pressure rise seen at the boiler and throughout the circuit. The 140 litre nominal capacity makes it suitable for larger heating installations where the system water content requires a vessel of this size.

• System pressure rises sharply when the heating runs and falls again once it cools, showing the vessel is no longer absorbing expansion
• Water discharges from the pressure relief valve during normal operation
• The pressure gauge reads high on a cold system, even after the correct cold fill pressure has been set
• Water or moisture appears at the air valve when it is depressed
• The vessel feels heavy or sounds full of water when tapped, indicating the air charge has been lost

• Confirm the installed vessel's nominal capacity of 140 litres matches the replacement
• Check the connection size, orientation and mounting arrangement against the existing vessel
• Establish the system design pressure and the required vessel charge pressure before fitting
• Allow for the weight and physical size of a 140 litre vessel during removal and installation