Alpha
Alpha 3-Way Valve Motor 1.045321
Alpha 3-way valve motor, part 1.045321, for Eco 2, InTEC 2 and E-Tec Plus boilers. Drives the diverter valve between heating and hot water.
At a glance
- Part type: Diverter valves and hydraulics
- Also known as 1258724
£63.05
£52.54 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 3-way valve motor, part 1.045321, is the electrically driven head that operates the diverter valve on Alpha condensing boilers. It mounts on the hydraulic assembly and rotates the valve spindle so primary water is sent either around the central heating circuit or through the domestic hot water plate heat exchanger. The same motor head is used across the Alpha Eco 2, InTEC 2 and E-Tec ranges.
Signs this part needs replacing
- Hot water runs cold while the central heating continues to work normally, or the reverse.
- Radiators warm up when only a hot tap is opened, indicating the valve is held in the heating position.
- The boiler fires and then cuts out shortly after a hot water demand starts.
- The motor head buzzes, runs hot or fails to rotate when the valve is tested through a demand change.
- A diverter valve or hot water related fault is logged on the boiler display.
Before you order
- Check the GC number on the appliance data badge against the compatibility list; Alpha fitted this motor to several boiler families.
- Earlier builds may carry part 1.033918, which this number replaces.
- Inspect the valve body and its seals while the head is removed, as a worn body will not be corrected by a new motor alone.
- Isolate the electrical supply and drain down as required before removing the motor head.
Mechanical
| Part type | Diverter valves and hydraulics |
|---|
Compliance
| Manufacturer part number (MPN) | 1.045321 |
|---|---|
| Commodity code | 8481 90 00 |
| GPC classification | Household Boilers/Furnaces/Tank Water Heaters Replacement Parts/Accessories |
| Alternative numbers | 1.033918, 1258724 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| ALPHA ALPHA ECO 2 | — | — | — | |
| ALPHA ALPHA ECO 2 BOILER | 47-532-60 | 47-532-60 | — | — |
| ALPHA ALPHA ECO 2 PLUS | — | — | — | |
| ALPHA ALPHA ECO 2 PLUS BOILER | 47-532-63 | 47-532-63 | — | — |
| ALPHA ALPHA InTEC 2 25X | — | — | — | |
| ALPHA ALPHA InTEC 2 25XE | — | — | — | |
| ALPHA ALPHA InTEC 2 26CE | — | — | — | |
| ALPHA ALPHA InTEC 2 28X | — | — | — | |
| ALPHA ALPHA InTEC 2 28XE | — | — | — | |
| ALPHA ALPHA InTEC 2 30CE | — | — | — |
Showing 10 of 42 compatible appliances.
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.
ALPHA appliance manual — ALPHA ECO 2 BOILER (GC 47-532-60)
manualmanualALPHA appliance manual — ALPHA ECO 2 PLUS BOILER (GC 47-532-63)
manualmanualALPHA appliance manual — E-TEC 28 (GC 47-532-69), E-TEC 28 (LPG) (GC 47-532-73), E-TEC 33 (GC 47-532-70), E-TEC 33 (LPG) (GC 47-532-74)
manualmanualALPHA appliance manual — E-TEC 33NX (GC 47-532-82), E-TEC 33NX LPG (GC 47-532-83)
manualmanualALPHA appliance manual — E-TEC HYBRID 33HB
manualmanualALPHA appliance manual — E-TEC PLUS 28 (GC 47-532-77), E-TEC PLUS 28 (LPG) (GC 47-532-77), E-TEC PLUS 33 (GC 47-532-78), E-TEC PLUS 38 (GC 47-532-79), E-TEC PLUS 38 (LPG) (GC 47-532-79)
manualmanualALPHA appliance manual — E-TEC PLUS 28NX (GC 47-532-89), E-TEC PLUS 28NX LPG (GC 47-532-89), E-TEC PLUS 38NX (GC 47-532-91), E-TEC PLUS 38NX LPG (GC 47-532-91)
manualmanualALPHA appliance manual — EVOKE 28 (GC 47-532-71), EVOKE 28 (LPG) (GC 47-532-75), EVOKE 33 (GC 47-532-72), EVOKE 33 (LPG) (GC 47-532-76)
manualmanualALPHA appliance manual — EVOKE 28NX (GC 47-532-84), EVOKE 28NX LPG (GC 47-532-85), EVOKE 33NX (GC 47-532-86), EVOKE 33NX LPG (GC 47-532-87)
manualmanualALPHA appliance manual — InTEC 2 25X (GC 47-532-61), InTEC 2 28X (GC 47-532-62)
manualmanualALPHA appliance manual — InTEC 2 25XE, InTEC 2 28XE
manualmanualALPHA appliance manual — InTEC 2 26CE (GC 47-532-66), InTEC 2 30CE (GC 47-532-67), InTEC 2 35CE (GC 47-532-68)
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