Vaillant
Vaillant 4-way valve 15kW 0020223550
Genuine Vaillant 15kW 4-way valve for compatible Vaillant heating appliances.
At a glance
- Also known as 1386886
- Fitting should be carried out by a Gas Safe registered engineer
Showing prices
£590.48
£492.07 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
A genuine Vaillant 4-way valve, part number 0020223550, rated at 15kW. It directs the flow of heating water within the appliance.
Signs this part needs replacing
- Central heating or hot water not reaching the correct temperature
- Appliance locks out on a flow or temperature fault
- Leaking or weeping from the valve body
- Valve fails to switch between heating and hot water demand
Before you order
- Match the part number on your existing valve before ordering
- Isolate the electrical and water supply before removing the old valve
- Fitting should be carried out by a Gas Safe registered engineer
Compliance
| Alternative numbers | 1386886 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VAILLANT VWF 157/4 | — | — | — | |
| VAILLANT flexoTHERM VWF 157/4 | — | — | — |
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.
Not sure which part?
Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.