Alpha Immergas
Alpha Immergas Three Way Valve Cartridge 3031745
Alpha 3031745 three way valve cartridge assembly for Alpha appliances, listed under diverter and motorised valve spares.
At a glance
- Part type: Diverter and motorised valves
£251.59
£209.66 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 3031745 is a three way valve cartridge assembly supplied by Alpha for use in its gas appliances. The cartridge sits inside the valve body and directs flow between the heating circuit and the domestic hot water circuit, so the appliance can switch between the two duties on demand. It is listed by the manufacturer under diverter and motorised valve spares.
Signs this part needs replacing
- Domestic hot water runs cold or fluctuates while the heating is working normally
- Radiators heat up when only hot water has been called for, or hot water runs when only heating is selected
- The appliance fails to change between heating and hot water modes, or cycles without reaching temperature
- Water weeping from the valve body or around the cartridge spindle
- Fault codes or lockout conditions linked to the diverter valve on the appliance display
Before you order
- Confirm the appliance model and GC number, then match them against the part number on the existing valve
- Check the numbers on the old cartridge: 3031745 and 031745 both identify this assembly
- Inspect the valve body and seating while the cartridge is out, and check whether a gasket or seal kit is needed at the same time
- Work on the appliance should be carried out by a competent person, with the appliance isolated and drained as required
Mechanical
| Part type | Diverter & Motorised Valves |
|---|---|
| Length | 0.1mm |
| Width | 0.1mm |
| Depth | 0.1mm |
Compliance
| Manufacturer part number (MPN) | 3031745 |
|---|---|
| Commodity code | 8481 90 00 00 |
| GPC classification | Valves/Fittings Accessories/Replacement Parts - Water and Gas |
No fitment data held for this part.
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 documents held for this part. The technical team will source them from the manufacturer — usually the same working day.
No technical questions yet for this part.
Not sure which part?
Tell the parts assistant what it's going into — the appliance make and model, or the GC number off the data badge — and it will check this part is on the fit list.