Alpha
Alpha 18mm Pipe Heat Exchanger to Pump 1.023736
18mm pipe connecting the heat exchanger to the pump in Alpha CD series boilers.
At a glance
- Also known as 1259310
Showing prices
£47.80
£39.83 ex. VAT · VAT at 20%
Available to order · 3 working days
Available to order · 3 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
The Alpha 1.023736 is an 18mm diameter pipe that connects the heat exchanger to the pump inside Alpha CD series boilers. It forms part of the boiler's internal water circuit, carrying water between the heat exchanger and the circulating pump.
Signs this part needs replacing
- Visible corrosion, pitting or scaling on the pipe surface
- Weeping or dripping at the pipe connections
- Water staining around the heat exchanger or pump area
- Falling system pressure that needs frequent topping up
- A kinked or deformed pipe restricting flow
Before you order
- Confirm your boiler model and GC number against the fitment list
- Check the pipe diameter and routing match the failed component
- Verify part number 1.023736 on the existing pipe or the manufacturer's parts list
Compliance
| Alternative numbers | 1259310 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| ALPHA ALPHA CD12S | — | — | — | |
| ALPHA CD20S | 41-532-18 | 41-532-18 | — | — |
| ALPHA CD20S (LPG) | 41-532-19 | 41-532-19 | — | — |
| ALPHA CD25X | 47-532-39 | 47-532-39 | — | — |
| ALPHA CD25X (LPG) | 47-532-40 | 47-532-40 | — | — |
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.