Vaillant
Vaillant Expansion Vessel 0020127199
Vaillant expansion vessel, part number 0020127199, for geoTHERM VWL 45/1, 65/1 and 75/1 A 230V appliances.
At a glance
- Part type: expansion vessel
- Appliance family: geoTHERM VWL A 230V
- Also known as 1385177
£280.80
£234.00 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 Vaillant 0020127199 is an expansion vessel used in Vaillant geoTHERM VWL A 230V appliances. It absorbs the volume change of water as the system heats and cools, holding system pressure within the working range. It is listed by the manufacturer for the VWL 45/1, 65/1 and 75/1 A 230V models.
Signs this part needs replacing
- System pressure falls repeatedly and needs topping up
- Pressure rises sharply once the appliance is running and heating up
- Water discharging from the pressure relief valve during normal operation
- The vessel feels heavy or water is heard inside it when shaken
- Pressure gauge needle moves excessively between cold and hot states
Before you order
- Confirm the appliance model number from the data badge, as the vessel is listed for specific VWL A 230V variants
- Check the part number on the existing vessel against 0020127199
- Verify the system volume and required vessel size against the manufacturer's specification for the installation
- Confirm the vessel connection and mounting arrangement match the appliance before removal
Compliance
| Alternative numbers | 1385177 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VAILLANT VWL 45/1 A 230V | — | — | — | |
| VAILLANT VWL 65/1 A 230V | — | — | — | |
| VAILLANT VWL 75/1 A 230V | — | — | — | |
| VAILLANT geoTHERM VWL 45/1 A 230V | — | — | — | |
| VAILLANT geoTHERM VWL 65/1 A 230V | — | — | — | |
| VAILLANT geoTHERM VWL 75/1 A 230V | — | — | — | |
| VAILLANT geoTHERM VWL 75/1 A 230V | — | — | — |
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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