Expansion Vessel Reflex N 100, 6 bar / 70°C, grey

The Reflex N 100 expansion vessel is a 100-litre grey pressure vessel designed for closed heating and cooling systems. Rated for a maximum working pressure of 6 bar and a maximum fluid temperature of 70°C, this vessel accommodates thermal expansion of system water to stabilise operating pressure and protect system components. It is intended for residential and light commercial installations where a compact, medium-capacity expansion solution is required to reduce pump cycling and limit pressure excursions.

Advantages

The vessel's 100-litre capacity provides substantial volume for thermal expansion while remaining suitable for smaller plant rooms and limited space installations. Constructed to withstand a working pressure up to 6 bar and temperatures up to 70°C, it offers reliable performance within common heating and cooling system parameters. The grey finish and standard connection arrangement make integration straightforward with existing pipework and accessories. By absorbing expansion, the unit helps protect boilers, pumps and piping from overpressure and reduces unnecessary system cycling.

Suitable for

• Closed central heating systems in single-family homes
• Small apartment building or light commercial heating installations
• Closed cooling systems with similar pressure and temperature requirements
• Systems requiring a 100-litre expansion capacity to stabilise pressure

Key specifications

• Nominal capacity: 100 litres
• Maximum working pressure: 6 bar
• Maximum fluid temperature: 70°C
• Colour: grey
• Suitable for closed heating and cooling systems

How to use

Install the expansion vessel in the heating or cooling circuit according to local regulations and manufacturer's installation practices. Position the vessel at a suitable point with standard connections accessible for filling and maintenance. Ensure the system is depressurised before connection, and set the pre-charge pressure to match the static pressure of the installation or the manufacturer's recommendation. After installation, pressurise the system and check for leaks, correct pre-charge and stable operating pressure during a normal heating or cooling cycle.

Usage recommendations

For reliable operation, verify pre-charge pressure periodically and inspect the vessel and connections for corrosion or damage. Use the vessel only within its rated maximum pressure and temperature limits and follow applicable local safety and installation codes. For systems near the vessel's limits, consult a heating engineer to confirm correct sizing and placement.