Vaillant
Vaillant Valve 1/2 Inch 0020266445
Vaillant 1/2 inch valve, part number 0020266445, for Arotherm 5/5 VWL AS heat pump appliances.
At a glance
- Appliance family: Arotherm 5/5 VWL AS
- Also known as 1389022
£51.18
£42.65 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 0020266445 is a 1/2 inch valve listed for the Arotherm 5/5 VWL AS heat pump range. It forms part of the appliance's hydraulic circuit, where a valve of this type regulates flow through the pipework. It is supplied as a single valve component under Vaillant part number 0020266445.
Signs this part needs replacing
- Visible water weeping or leakage around the valve body or its connections
- The valve spindle is stiff, seized or will not operate through its full travel
- Reduced flow through the circuit, with the appliance struggling to reach or hold temperature
- Scale or debris build-up inside the valve affecting its sealing or flow characteristics
- Persistent dripping from the valve after the system has been isolated and repressurised
Before you order
- Confirm the appliance model against the fit list above, including any R1 variant marking
- Check the existing valve is a 1/2 inch fitting before ordering
- Establish whether the valve body alone is required or whether associated seals and connections also need attention
- Isolate and drain the relevant circuit before removing the old valve
Compliance
| Alternative numbers | 1389022 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VAILLANT aroTHERM 5/5 VWL 35/5 AS 230V S2 (2019-2022) | — | — | — | |
| VAILLANT aroTHERM 5/5 VWL 35/5 AS 230V S2 R1 (2019-2022) | — | — | — | |
| VAILLANT aroTHERM 5/5 VWL 55/5 AS 230V S2 (2019-2022) | — | — | — | |
| VAILLANT aroTHERM 5/5 VWL 55/5 AS 230V S2 R1 (2019-2022) | — | — | — |
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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