Andrews 200L Expansion Vessel 1450L Cylinder 10 Bar 95612725

The Andrews 200L Expansion Vessel - 1450L Cylinder - 10 Bar is a diaphragm expansion vessel used on Andrews Water Heaters unvented hot water cylinders. It absorbs the expansion of heated water within a 1450 litre cylinder system, limiting pressure rise and protecting the cylinder and its safety components. This vessel is rated at 10 bar.

• System pressure rises sharply when the cylinder heats and falls back when it cools
• Water discharges from the pressure relief valve during the heating cycle
• The vessel feels heavy or full of water when tapped, indicating a failed diaphragm
• Frequent manual top-ups are needed to keep the system at its correct cold pressure
• Visible corrosion, weeping or staining around the vessel connection or shell

• Confirm the cylinder model and variant, as Direct, Indirect, Flexistor and Solar 1450L units are listed against this vessel
• Check the system pressure rating required for the installation, since 6 bar and 10 bar cylinder variants appear in the fitment list
• Verify the existing vessel's capacity and pressure rating match the 200 litre, 10 bar specification before ordering
• Check the condition of the connecting pipework, bracket and isolation valve so the replacement can be completed in one visit