Alpha
Alpha seal kit 790 for pump, 3 port valve, main heat exchanger and WFS 6.1000790
Genuine Alpha seal kit 790, covering the pump, 3 port valve, main heat exchanger and WFS on the Alpha 500E boiler, part number 6.1000790.
At a glance
- Also known as SEAL-KIT-790-PUMP3-PORT-VLV-FLOW-SWITCH-500E, 1257509
- Fitting should be carried out or checked by a Gas Safe registered engineer
£15.96
£13.30 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
Alpha seal kit 790 is a multi-point seal kit for the Alpha 500E boiler, used when servicing or replacing the pump, 3 port valve, main heat exchanger or WFS. It is a genuine Alpha part, number 6.1000790. The manufacturer's own listing does not spell out what "WFS" stands for.
Signs this part needs replacing
- Weeping or dripping from the pump, 3 port valve or heat exchanger connections
- Any of the listed components removed for servicing with the old seals damaged
- Loss of system pressure with no obvious external leak
- Noisy or juddering operation at the pump or 3 port valve
Before you order
- Match this part number against the seal kit fitted to your boiler
- Isolate and drain the system before starting work
- Fitting should be carried out or checked by a Gas Safe registered engineer
Compliance
| Alternative numbers | SEAL-KIT-790-PUMP3-PORT-VLV-FLOW-SWITCH-500E, 1257509 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| ALPHA 500 E | 47-532-07 | 47-532-07 | — | — |
| ALPHA ALPHA 500 E | — | — | — |
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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