Heating Expansion Vessels

Heating expansion vessels are used in sealed heating systems to accommodate the increase in water volume that occurs as the system temperature rises. The vessel provides space for this expansion, helping maintain system pressure and protecting the heating system from excessive pressure.

Trebles supplies heating expansion vessels for a range of domestic and commercial heating applications, with different capacities and specifications available to suit the requirements of the system.

Explore Our Popular Ranges

Flamcomat FG Main Vessels

Flamcomat FG main vessels provide expansion control, pressurisation, deaeration and make-up…
Flexcon Top Vessel

Flexcon TOP Vessels

The Flamco Flexcon TOP is a sealed system expansion vessel for…
Heatwave Vessels

Heatwave Vessels

HeatWave™ expansion vessels provide a durable, easy-to-install solution for sealed heating…
Reflex N_NG Vessel

Reflex N/NG Vessels

Reflex N and NG expansion vessels are designed for sealed heating…
Zilmet Calpro

Zilmet CAL-PRO Vessels

Zilmet CAL-PRO expansion vessels absorb water volume changes in domestic and…