Vaillant
Vaillant Valve 5/8 0020266446
5/8 inch valve from Vaillant, part number 0020266446, for Arotherm 5/5 AS 230V S2 heat pump appliances.
At a glance
- Appliance family: Arotherm 5/5 AS 230V S2
- Also known as 1392764
Showing prices
£62.54
£52.12 ex. VAT · VAT at 20%
Available to order · 7 working days
Available to order · 7 working days
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The Vaillant 0020266446 is a 5/8 inch valve intended for Arotherm 5/5 AS 230V S2 heat pump appliances. It sits within the appliance pipework and controls flow at a 5/8 inch connection point.
Signs this part needs replacing
- Visible weeping or dampness around the valve body or its connections
- A drip or steady leak from the valve while the system is running
- The valve no longer shuts off or regulates flow correctly
- Water tracking down the pipework from the valve area
- Corrosion or scale build-up on the valve body
Before you order
- Confirm your appliance model against the fitment list above
- Check that the existing valve is a 5/8 inch fitting
- Match the part number 0020266446 on the component or against the manufacturer's parts list
Compliance
| Alternative numbers | 1392764 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VAILLANT aroTHERM 5/5 VWL 105/5 AS 230V S2 (2019) | — | — | — | |
| VAILLANT aroTHERM 5/5 VWL 125/5 AS 230V S2 (2019) | — | — | — | |
| VAILLANT aroTHERM 5/5 VWL 75/5 AS 230V S2 (2022) | — | — | — | |
| VAILLANT aroTHERM 5/5 VWL 75/5 AS 230V S2 R1 (2022) | — | — | — |
Fitment listings are a guide, not a guarantee. Plant-room assemblies get modified on site more often than not. Send us the GC number off the data badge and a photo of the existing valve and we will confirm before anything is dispatched.
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 technical questions yet for this part.
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