Description
Potterton 7683801 Expansion Vessel 7L + 7683976 PRV – Fits Combi & System Boilers
This Potterton Combi 25 Expansion Vessel 7L 7683801 + PRV 7683976Â helps manage pressure within your heating system for safe and stable boiler operation. The included boiler pressure relief valve (PRV) protects the system from overpressure. Together, part numbers 7683801 and 7683976 keep your boiler functioning safely and efficiently.
Compatible Boilers
This part is compatible with the following models:
Combi Series
• Combi 25 – GC 47-393-58
• Combi 25 LPG – GC 47-393-70
• Combi 30 – GC 47-393-59
• Combi 30 LPG – GC 47-393-69
• Combi 36 – GC 47-393-67
System Series
• System 12 – GC 41-594-12
• System 15 – GC 41-592-54
• System 18 – GC 41-592-55
• System 18 LPG – GC 41-592-96
• System 24 – GC 41-594-13
• System 24 LPG – GC 41-594-16
If you’re looking for a Potterton System 12kW Expansion Vessel 6L MPN 720759301 or any other different Potterton Expansion Vessel, follow the link provided.
Why Choose This Product?
This high-quality Potterton expansion vessel and PRV set maintains safe operating pressure inside your boiler. The 7-litre vessel absorbs excess pressure, while the boiler pressure relief valve releases any dangerous build-up. Both parts are either brand new or fully refurbished and tested for reliability. With a 12-month warranty, this set offers peace of mind and long-term performance.
Delivery and Return
Place orders before 1 PM for same-day dispatch via reliable couriers. Choose from standard or next-day delivery options. Returns are accepted within 30 days if the part is unused and in original packaging. Always use a Gas Safe registered engineer for installation and warranty protection.











