Expansion vessels for heating

Expansion vessels for heating systems are essential components for managing thermal expansion in closed-loop systems. These vessels help maintain system pressure and prevent damage from overpressure. The category includes a range of models with capacities from 5L to 350L, suitable for central heating and cooling applications. Wall-mounted and vertical models with base mounts are available, with some models featuring integrated wall brackets. All vessels are constructed with SBR membranes and operate within a temperature range of -10°C to +99°C, with a recommended operating temperature limit of +80°C.

They are compatible with systems using up to 50% antifreeze concentration and are CE marked under EU pressure equipment directive 97/23/ES. Connection sizes include 3/4-inch threads, and vessels are typically red in colour for easy identification.

How to choose

• Capacity: Select a vessel size based on the system volume and expansion requirements, with options from 5L to 350L.
• Mounting type: Choose between wall-mounted (ER series) and vertical with base (ERCE series), with some models featuring built-in wall brackets.
• Connection type: Confirm the system requires a 3/4-inch threaded connection for compatibility.
• Material: All vessels use SBR (styrene-butadiene rubber) membranes, suitable for standard heating and cooling fluids.
• Temperature range: Ensure the vessel is suitable for the system’s operating temperature, up to +80°C for long-term use.

Frequently asked questions

What is the maximum antifreeze concentration compatible with these vessels?
These vessels support up to 50% antifreeze concentration in the system fluid.

Can these vessels be used in both heating and cooling systems?
Yes, the vessels are designed for use in both heating and cooling systems, provided the temperature and pressure limits are observed.

What is the operating temperature range for these expansion vessels?
The operating temperature range is from -10°C to +99°C, with a recommended continuous operating temperature of up to +80°C.