Heatline Vizo 24 Expansion Vessel 7L – Refurbished | Part No. D003200028

A sealed central heating system depends on consistent pressure to function safely — and when the expansion vessel fails, that balance is lost. As heated water expands within the circuit, an underperforming vessel can no longer absorb the resulting pressure rise, causing the pressure relief valve to activate repeatedly, placing strain on seals, pipework, and internal components with every single heating cycle. The Heatline Vizo 24 Expansion Vessel 7L (Part No. D003200028) is the exact replacement needed to restore that balance. Designed specifically for the Heatline Vizo 24 and compatible across several other Heatline models, this vessel absorbs thermal expansion efficiently, keeps your system pressure stable, and protects your boiler from the kind of cumulative damage that leads to expensive callouts.

This is a professionally refurbished genuine Heatline component. Each unit is stripped, cleaned, and pressure-tested against OEM specifications before being cleared for dispatch — giving you genuine manufacturer-grade performance at a significantly lower cost than buying new. The 7-litre capacity provides a direct like-for-like fit, requiring no modifications and allowing for a straightforward, compliant installation.

Compatible Heatline Models

OEM Quality. Proven Performance. Backed by Warranty.

Every refurbished vessel in our range is inspected and tested to confirm it meets the original manufacturer performance standards before dispatch. This D003200028 unit stabilises system pressure reliably, prevents overpressure events, and reduces wear on your boiler pump and heat exchanger. Supplied with a full 12-month warranty, it is a smart, cost-effective solution for homeowners and professional heating engineers who need a dependable replacement without paying new-part prices.

Delivery & Returns

Orders placed before 3:00 PM are dispatched the same working day. Both standard and next working day delivery options are available at checkout. Returns are accepted within 30 days, provided the item is unused and in its original condition.

Note: Please confirm that part number D003200028 matches your existing vessel before placing your order. Installation must be carried out by a Gas Safe registered engineer to ensure safety compliance and warranty validity.