Expansion membrane tank Reflex S8 Solad for heating systems 8 L, 10 bar (9702600)

Reflex S8 Solad is a membrane expansion tank designed for closed heating systems. With an 8 L nominal volume and a maximum working pressure of 10 bar, the tank compensates for thermal expansion of the heating medium, maintains stable system pressure and reduces the risk of hydraulic shocks. The compact steel vessel with an internal elastomer membrane separates the gas and liquid sides to ensure consistent pressure control and protect pumps, valves and heat generators in domestic and light commercial installations.

Advantages

The Reflex S8 Solad offers reliable pressure compensation and a corrosion-resistant internal design that prolongs system service life. Its pre-pressurised membrane arrangement simplifies installation and commissioning by requiring only matching to system precharge pressure. The tank’s compact footprint and robust construction enable flexible positioning near boilers, heat exchangers or circulation circuits while providing consistent performance at up to 10 bar operating pressure.

Suitable for

• Domestic and small commercial heating boiler circuits
• Closed circulation systems and hydronic heating loops
• Systems where prevention of pressure spikes and protection of pumps is required
• Replacement or retrofitting of existing expansion vessels in compact plant rooms

Key specifications

• Nominal volume: 8 litres
• Maximum working pressure: 10 bar
• Membrane type: elastomer separation between gas and liquid
• Material: steel vessel with internal membrane
• Suitable medium: heating water/heat transfer fluid in closed systems

How to use

Install the expansion tank on the system return line or at a location recommended by the heating system manufacturer, ensuring secure mechanical mounting and correct orientation. Before commissioning, set the tank precharge to match the static pressure of the heating system when cold. Connect the tank to the system using appropriate fittings and verify there are no leaks after filling. During handover, confirm correct pressure behaviour by observing pressure changes while the system is heated and cooled.

Usage recommendations

Check the system pressure periodically and verify the membrane integrity by measuring precharge pressure when the system is isolated and drained. Replace the tank if the membrane shows signs of permanent deformation, leakback or if the precharge cannot be maintained. Use corrosion-inhibited water where required by system specifications and follow local codes for mounting and pressure relief.