The Alpha 1.023560 Expansion Vessel is a genuine 8-litre replacement vessel designed to maintain stable system pressure within compatible Alpha boilers. As water heats and expands, the expansion vessel absorbs the increased pressure, helping to protect the boiler and heating system from damage, leaks, or unnecessary strain.

A failing or waterlogged expansion vessel can cause pressure spikes, repeated pressure loss, or boiler lockouts. Replacing it with this genuine Alpha part restores reliable pressure control and smooth system operation.

Key Features

• Genuine Alpha 8L expansion vessel

• Maintains stable system pressure during heating cycles

• Helps prevent over-pressurisation and system faults

• Durable and reliable construction

• Direct-fit replacement for fast, accurate installation

Compatible With

This expansion vessel is suitable for the following Alpha boiler ranges:

• Alpha CB

• Alpha SY

• Alpha CD

Please verify the part number (1.023560) with your boiler manual to ensure correct compatibility.