Baxi
Baxi Expansion Vessel Hose 7223448
Baxi expansion vessel hose, part 7223448, for Main Eco Combi and Main Eco System ErP boilers; alternative number 1134879.
At a glance
- Part type: Hose, expansion vessel
- Appliance family: Main Eco Combi ErP, Main Eco System ErP
- Also known as 1134879
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
£33.60
£28.00 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 7223448 is a flexible hose that links the expansion vessel to the heating circuit on Main Eco ErP boilers. It carries system water between the vessel and the appliance's hydraulic pipework, so the vessel can absorb the expansion that occurs as the system heats up. The part is manufactured by Baxi for the Main Eco Combi ErP and Main Eco System ErP ranges.
Signs this part needs replacing
- System pressure drops repeatedly and the boiler needs topping up more often than usual
- Water weeping, dripping or leaving scale staining at either hose union
- The hose feels hard, cracked or perished when handled
- Damp or corrosion around the expansion vessel connection point
- The pressure gauge swings noticeably as the boiler heats and cools
Before you order
- Check the GC number on the appliance data badge against the list above to confirm the hose suits your model.
- Look for the alternative number 1134879 on the existing hose or on the boiler paperwork.
- Inspect the union seals and washers at both ends of the hose and renew them if they are worn or flattened.
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Mechanical
| Part type | Hose Expansion Vessel |
|---|
Compliance
| Manufacturer part number (MPN) | 7223448 |
|---|---|
| GPC classification | Household Boilers/Furnaces/Tank Water Heaters Replacement Parts/Accessories |
| Alternative numbers | 1134879 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| BAXI BAXI MAIN ECO COMBI ErP 24 | — | — | — | |
| BAXI BAXI MAIN ECO COMBI ErP 28 | — | — | — | |
| BAXI BAXI MAIN ECO COMBI ErP 35 | — | — | — | |
| BAXI BAXI MAIN ECO SYSTEM ErP 18 | — | — | — | |
| BAXI BAXI MAIN ECO SYSTEM ErP 24 | — | — | — | |
| BAXI MAIN ECO COMBI ErP 24 | 47-077-18 | 47-077-18 | — | — |
| BAXI MAIN ECO COMBI ErP 28 | 47-077-19 | 47-077-19 | — | — |
| BAXI MAIN ECO COMBI ErP 35 | 47-077-20 | 47-077-20 | — | — |
| BAXI MAIN ECO SYSTEM ErP 18 | 41-470-43 | 41-470-43 | — | — |
| BAXI MAIN ECO SYSTEM ErP 24 | 41-470-44 | 41-470-44 | — | — |
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.
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