
Alpha
Alpha 18mm Dia. Pipe Heat Exchanger to Pump 1.023709
18mm diameter pipe connecting the heat exchanger to the pump, part number 1.023709.
At a glance
- Also known as 1259306
£45.89
£38.24 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 18mm diameter pipe is a connecting pipe that runs between the heat exchanger and the pump on Alpha appliances. It is supplied under part number 1.023709 and forms part of the water circuit on the models listed below. The pipe carries flow between the two components as part of the appliance's heating circuit.
Signs this part needs replacing
- Visible corrosion, pitting or scaling on the pipe surface
- Weeping or damp patches at the pipe connections
- Loss of system pressure with no other obvious cause
- Kettling or restricted circulation traced to a blocked or narrowed pipe
- Physical damage or deformation to the pipe run
Before you order
- Confirm the appliance model and GC number against the fitment list above
- Check the pipe diameter and routing on the appliance before ordering
- Inspect the connecting seals and washers, as these may need attention at the same time
- Verify the part number 1.023709 matches the one on the existing component
Compliance
| Alternative numbers | 1259306 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| ALPHA CD28S | 41-532-20 | 41-532-20 | — | — |
| ALPHA CD28S (LPG) | 41-532-21 | 41-532-21 | — | — |
| ALPHA CD28X | 47-532-37 | 47-532-37 | — | — |
| ALPHA CD28X (LPG) | 47-532-38 | 47-532-38 | — | — |
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.
