Baxi
Baxi 5114692 Expansion Vessel 10 Litre
Baxi 5114692 expansion vessel, 10L, replacement part for Baxi, Main, Potterton, and Heatmax combi and system boilers.
At a glance
- Part type: Expansion Vessel
- Also known as EXPANSION-VESSEL-10L
£101.11
£84.26 ex. VAT · VAT at 20%
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The Baxi 5114692 is a 10-litre expansion vessel, a replacement component used in various Baxi, Main, Potterton, and Heatmax heating appliances. It manages pressure changes in the central heating system by accommodating the expansion of water as it heats. This part is a direct replacement for the original expansion vessel in compatible models.
Signs this part needs replacing
- Boiler pressure rises rapidly when heating is on.
- Pressure relief valve discharges water frequently.
- Visible corrosion or water leaks from the expansion vessel.
- Boiler locks out or shows a pressure-related fault code.
- The vessel feels heavy or waterlogged when tapped.
Before you order
- Confirm your appliance model and GC number match the compatibility list.
- Check the existing expansion vessel's part number and capacity.
- A new gasket or seal may be required for the connection; check the existing seal condition.
Mechanical
| Part type | Expansion Vessel |
|---|
Compliance
| Manufacturer part number (MPN) | BAXI5114692 |
|---|---|
| Commodity code | 8403 90 00 00 |
| GPC classification | Household Boilers/Furnaces/Tank Water Heaters Replacement Parts/Accessories |
| Alternative numbers | EXPANSION-VESSEL-10L |
No fitment data held for this part.
Documents & drawings
Everything we hold for this part. Where a document exists but we don't hold it, the technical team will source it from the manufacturer — usually the same working day.
No documents held for this part. The technical team will source them from the manufacturer — usually the same working day.
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