Flexcon Premium 4 Litre expansion vessels are suitable for use in central heating and cooling installations.
For use under high pressure. Top-quality high strength steel, with a gleaming red (RAL 3002) epoxy powder coating – perfect protection and finish. Clamp ring of heavy-duty thermally-galvanised steel. Our flexible butyl diaphragms with rolling action are suitable for use with glycol based anti-freeze addition up to 50%. Exact details are available on request. The nitrogen airvalve is sunk and cannot be damaged due to the cap and extra protective plastic beige coverplate. Uncoated threaded system connection, ensuring problem free connecting.
Each vessel is factory tested.
Maximum working pressure: 6.0 bar.
Vessels in accordance with EN13831.
Suitable for systems with a maximum system temperature of 120 °C.
Maximum temperature diaphragm: -10 / 90 °C.
Suitable for addition of glycol-based anti-freeze up to 50%.
In accordance with Pressure Equipment Directive 2014/68/EU.
Red (RAL 3002) epoxy powder coating.
Flexcon Premium 35 - 80: With feet and including mounting kit.
Pre Charge (Bar)
Maximum Working Pressure (Bar)
Connections (BSP M) (G)
Flexcon Premium 4
Next Day Available
15 Year Warranty
Diameter [mm] Height [mm] 192
Volume / Capacity
Diaphgram : Butyl
Vessel Pre-Charge Pressure
Write Your Own Review
Color sit amet, consectetur adipiscing elit. In gravida pellentesque ligula, vel eleifend turpis blandit vel. Nam quis lorem ut mi mattis ullamcorper ac quis dui. Vestibulum et scelerisque ante, eu sodales mi. Nunc tincidunt tempus varius. Integer ante dolor, suscipit non faucibus a, scelerisque vitae sapien.