Expansion Vessel Reflex N 80, 6 bar / 70°C, gray

The Reflex N 80 expansion vessel is a compact gray pressure vessel intended for closed heating and hot water systems. Designed to stabilize system pressure and absorb thermal expansion, it supports residential and light-commercial boilers and water heaters. The vessel is rated for a maximum working pressure of 6 bar and a maximum operating temperature of 70°C, providing a technical solution for maintaining consistent pressure levels and protecting system components from overpressure and frequent cycling.

Advantages

The Reflex N 80 offers a compact footprint and corrosion-resistant outer casing suitable for confined installation spaces. Its pre-charged design ensures reliable pressure absorption and quick response to changes in system volume. Constructed for compatibility with common heating circuits, the vessel reduces stress on pumps and valves and helps prevent water hammer and pressure-related leaks. The gray finish enables discreet integration with a variety of boiler room layouts.

Suitable for

• Domestic central heating systems
• Hot water storage and circulation systems in small commercial settings
• Boilers and water heaters requiring pressure stabilization up to 6 bar
• Applications with maximum fluid temperatures up to 70°C

Key specifications

• Maximum working pressure: 6 bar
• Maximum operating temperature: 70°C
• Nominal vessel size: 80 (design capacity class)
• Color/finish: gray
• Designed for closed heating and hot water systems
• Pre-charged membrane type suitable for pressure absorption

How to use

Install the expansion vessel on the system return or at the recommended connection point according to the system layout and local regulations. Ensure the pre-charge pressure of the vessel matches the static pressure of the heating circuit before commissioning. Mount the unit on a suitable bracket or support, connect to the system using appropriate fittings and isolation valves, and purge the system of air. Verify tightness and correct system pressure during initial operation and after any maintenance procedures.

Usage recommendations

Check the vessel pre-charge periodically and adjust to match the system static pressure when the system is cold. Inspect mounting and connections for corrosion or leaks during routine boiler maintenance. Replace the vessel if the membrane shows signs of failure or if the unit no longer holds the pre-charge pressure.