Alpha
Alpha D18 Pipe System Return 1.021881
18mm diameter heating return pipe assembly for Alpha CD13R and CD18R LPG gas boilers, part number 1.021881.
At a glance
- Also known as D18-PIPE-SYSTEM-RETURN-MODULE, 1250336
£20.30
£16.92 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 Alpha 1.021881 is an 18mm diameter pipe assembly used on the heating return side of Alpha CD-R series gas boilers. It forms part of the system return path, carrying water back through the appliance. It is supplied as a pipe assembly for the system return.
Signs this part needs replacing
- Visible corrosion, pitting or scaling on the pipe surface
- Weeping or dripping at pipe joints or connections
- Restricted flow causing uneven or reduced heating
- Discoloured system water or black oxide sludge collecting around the pipe
Before you order
- Confirm your boiler model matches one of the listed fits
- Check that the pipe diameter required is 18mm
- Check whether your appliance is the LPG variant
- Compare the part number on the existing component against 1.021881
Compliance
| Alternative numbers | D18-PIPE-SYSTEM-RETURN-MODULE, 1021881, 1250336 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| ALPHA CD13R | 41-532-05 | 41-532-05 | — | — |
| ALPHA CD13R (LPG) | 41-532-11 | 41-532-11 | — | — |
| ALPHA CD18R | 41-532-03 | 41-532-03 | — | — |
| ALPHA CD18R (LPG) | 41-532-09 | 41-532-09 | — | — |
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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