Expansion Vessel VAREM R1012228 12 L for DRI systems

VAREM expansion vessel R1012228 with 12 L nominal capacity is designed for closed heating and domestic water systems that use DRI components. The vessel provides a flexible air cushion to accommodate thermal expansion of water, helping to maintain system pressure and reduce cycling of pumps and valves. Constructed to be fitted into installations where a compact, reliable expansion device is required, this unit supports the proper functioning of pressure regulation and overpressure prevention during temperature fluctuations.

Advantages

The vessel offers a 12-litre nominal volume in a compact body suitable for space-limited installations. Its design ensures stable pressure buffering and reduced stress on system components by absorbing sudden volume changes. The product is compatible with DRI system configurations and contributes to improved system longevity through consistent pressure control and prevention of frequent relief valve activation.

Suitable for

• Closed central heating systems incorporating DRI components
• Domestic hot water systems requiring thermal expansion compensation
• Small commercial installations where a 12 L expansion vessel is appropriate
• Retrofitting or replacing existing expansion vessels of similar capacity

Key specifications

• Nominal volume: 12 litres
• Application: closed heating and domestic water systems compatible with DRI components
• Function: thermal expansion compensation and pressure buffering
• Form factor: compact vessel for inline or cabinet-mounted installations

How to use

Install the expansion vessel according to the system layout, ensuring correct orientation and secure mechanical connection to the system pipework. Pre-charge the vessel to the manufacturer-recommended air pressure for the specific system static pressure before commissioning. After installation, check for leaks and verify system pressure behaviour during heating and cooling cycles, adjusting the pre-charge or isolation valves as required to achieve stable operation.

Usage recommendations

Perform periodic checks of the vessel pre-charge pressure and inspect connections for corrosion or leakage. When replacing an existing vessel, match the nominal volume and verify compatibility with the DRI configuration of the system. Follow national and local installation codes and the system manufacturer's guidance for safe operation and maintenance.