Altecnic Potable Vessel 12 Litre 3/4 Boss PV12G

The Altecnic 12 litre Potable vessel with 3/4 Boss is a diaphragm expansion vessel intended for potable water systems, absorbing the expansion of heated water and limiting pressure rises within the circuit. It is supplied under the Altecnic expansion vessel range and connects to pipework via a 3/4 boss. The 12 litre capacity suits installations where the expanded volume of the potable water system needs to be accommodated safely.

• Water discharging from the system pressure relief valve during heating cycles
• System pressure rising sharply and failing to settle when the water cools
• Water appearing at the vessel's air charge valve, indicating a failed diaphragm
• Continuing pressure loss or pressure gain that cannot be traced to any other component
• Visible corrosion, pitting or weeping at the vessel shell or the boss connection

• Confirm the existing vessel's capacity matches 12 litre, as an undersized vessel will not control expansion correctly
• Check the connection size on the pipework is 3/4 boss before ordering
• Verify the vessel is being used on a potable water system, not a sealed heating circuit, as the two applications are not interchangeable
• Check the available installation space, as the replacement must be fitted with adequate clearance for the connection and any access required for servicing