Glow-worm Flexible Tube Expansion Vessel 0010028837

The flexible tube for the expansion vessel is a Glow-worm connecting hose used to link the expansion vessel to the boiler's hydraulic circuit. It is fitted across the Glow-worm Compact and Micracom combi ranges, where it allows the vessel to be mounted away from the main water-carrying components while maintaining a sealed connection. The part carries the manufacturer reference 0010028837.

• Visible cracking, perishing or hardening of the tube material
• Weeping or damp traces at the tube unions or along its length
• Loss of system pressure that cannot be traced to any other component
• Kinking or deformation restricting flow between the vessel and the circuit
• Discolouration or scale build-up around the connection points

• Confirm the boiler model and, where applicable, the GC number against the appliance data badge
• Inspect the existing tube and unions to confirm the fault lies with the hose rather than the vessel itself
• Check that the expansion vessel charge and system pressure have been tested before replacing the tube
• Verify the part number 0010028837 matches the reference shown in the manufacturer's parts list for your appliance