Altecnic Reflex Potable Water Vessel PV18W

The Reflex 18 litre Potable Water Vessel is an expansion vessel manufactured by Altecnic. It is supplied under the Reflex range and forms part of the Altecnic expansion vessel line-up, with a stated capacity of 18 litres. The vessel is intended for potable water installations, where it accommodates the expansion of heated water within a sealed system and helps to limit pressure rise.

• System pressure rises sharply as the appliance heats up and does not settle back when it cools.
• The pressure relief valve discharges water during normal heating cycles.
• System pressure requires frequent topping up, with no visible leak elsewhere on the circuit.
• The vessel feels heavy or full of water when tapped, indicating the air charge has been lost.
• Corrosion, staining or dampness around the vessel connection.

• Confirm the existing vessel is rated for potable water service, not just sealed heating duty.
• Check the stated 18 litre capacity against the volume and pressure requirements of the installation.
• Verify the connection arrangement and available space match the vessel being replaced.
• Confirm the required system charge pressure for the vessel before fitting.