Alpha
Alpha 3 port valve with seal kit 790 6.5634030A
Genuine Alpha 3 port valve, supplied with seal kit 790, part number 6.5634030A.
At a glance
- Also known as 1251251
- Fitting should be carried out or checked by a Gas Safe registered engineer
Showing prices
£295.00
£245.83 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
This is the 3 port valve fitted to affected Alpha boilers, which directs water flow between the central heating and hot water circuits, supplied together with seal kit 790. It is a genuine Alpha part, number 6.5634030A.
Signs this part needs replacing
- Hot water and heating not switching correctly between circuits
- Weeping or dripping from the 3 port valve body
- The valve is noisy or stiff when changing over
- Both heating and hot water not working as expected together
Before you order
- Match this part number against the valve fitted to your boiler
- Isolate and drain the relevant circuit before removing the old valve
- Fitting should be carried out or checked by a Gas Safe registered engineer
Compliance
| GC number | 379-774 |
|---|---|
| Alternative numbers | 1251251 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| ALPHA 500 E | 47-532-07 | 47-532-07 | — | — |
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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