Potterton 6 Litre System Expansion Vessel – Refurbished | MPN 720759301

Every sealed central heating system relies on a carefully balanced pressure environment — and the Potterton 6 Litre Expansion Vessel (MPN 720759301) is the component responsible for maintaining exactly that. As water heats up and expands within your system, this vessel quietly absorbs the excess pressure, preventing dangerous build-up that could otherwise stress your boiler's internal components and lead to premature failure.

Professionally refurbished and pressure-tested to meet original manufacturer standards, this is a genuine Potterton part recovered from a fully operational boiler — not an aftermarket imitation. It's the same quality, the same fit, and the same performance, at a significantly reduced cost.

Manufacturer Part Number: 720759301

• Capacity: 6 Litres
• Condition: Refurbished
• Comes with 12 months warranty
• Suitable for Potterton system boilers
• SKU: EXP-2722-A-BC

Compatible Boilers

Why Choose This Product?

Built to Protect. Restored to Perform.

A failing expansion vessel doesn't just affect pressure — it puts your entire heating system at risk. Unchecked pressure fluctuations can damage heat exchangers, valves, and seals, turning a simple part replacement into a far more expensive repair. This refurbished Potterton vessel steps in as a direct like-for-like replacement, restoring your system's pressure balance and helping your boiler operate efficiently across every heating cycle.

Each unit undergoes rigorous pressure testing before dispatch, ensuring it arrives ready to install and perform from day one. Backed by a 12-month warranty, you can fit it with complete confidence.

Delivery & Returns

Order before 3:00 PM for same-day dispatch. Returns accepted within 30 days, provided the part is unused and in its original packaging.

Note: Always verify MPN 720759301 against your existing part before ordering. Installation must be completed by a Gas Safe registered engineer to ensure safety compliance and warranty validity.