Alpha
Alpha Hydraulic Assembly Complete 3.017116
Hydraulic assembly complete for Alpha CD28C Extra LPG gas boilers, controlling changeover between hot water and central heating.
At a glance
- Also known as 1258015
£453.76
£378.13 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 hydraulic assembly complete (part 3.017116) is a diverter valve assembly used in Alpha CD28C Extra LPG gas boilers. It controls the changeover between domestic hot water and central heating demand within the boiler's hydraulic circuit.
Signs this part needs replacing
- No hot water, or hot water only intermittently, while central heating continues to work
- Domestic hot water temperature fluctuating or running cold
- Diverter valve failing to switch between heating and hot water modes
- Water leaking from the hydraulic assembly or diverter body
- Boiler failing to respond to a hot water demand
Before you order
- Confirm your boiler is an LPG variant of the CD28C Extra
- Check the GC number on the appliance data badge against the fitment list
- Verify the existing part number is 3.017116
Mechanical
| Part type | Hydraulic Assembly |
|---|
Compliance
| Manufacturer part number (MPN) | 3017116 |
|---|---|
| Alternative numbers | 3017116, 3017116, 1258015 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| ALPHA ALPHA CD28C EXTRA | — | — | — | |
| ALPHA ALPHA CD28C EXTRA LPG | — | — | — | |
| ALPHA CD28C | 47-532-33 | 47-532-33 | — | — |
| ALPHA CD28C (LPG) | 47-532-34 | 47-532-34 | — | — |
| ALPHA CD28C EXTRA | — | — | — | |
| ALPHA CD28C EXTRA (LPG) | — | — | — |
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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