Alpha
Alpha Flow Regulator 10 Litre Blue 1.011128
Alpha 10 litre blue DHW flow regulator (1.011128) for LPG variants of CB and CD series gas boilers.
At a glance
- Also known as 1250024
£11.08
£9.23 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 1.011128 is a 10 litre DHW flow regulator supplied in blue for use in a number of Alpha gas boilers. It controls the domestic hot water flow rate through the appliance so the boiler can maintain a stable draw-off rate and consistent hot water temperature. It is listed in the Alpha spares range under isolation valves.
Signs this part needs replacing
- Hot water flow rate at the tap falls below the boiler's rated draw-off
- DHW temperature fluctuates or runs hot and cold as the flow rate changes
- Draw-off rate becomes inconsistent between outlets
- Scale or debris is visible in the regulator body or inlet
- Water weeps from the regulator body or its connections
Before you order
- Confirm your boiler model and GC number against the fitment list above
- Check the existing regulator is the 10 litre blue type, as ratings and colour codes differ across the range
- Confirm the appliance is the LPG variant where a GC number is quoted
- Isolate the water supply and depressurise the appliance before removal
Compliance
| GC number | E65-154 |
|---|---|
| Alternative numbers | 1250024 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| ALPHA ALPHA CB24X | — | — | — | |
| ALPHA ALPHA CB28X | — | — | — | |
| ALPHA ALPHA CB50 | — | — | — | |
| ALPHA ALPHA CD24C | — | — | — | |
| ALPHA ALPHA HE CB25 | — | — | — | |
| ALPHA CB24X | 47-532-14 | 47-532-14 | — | — |
| ALPHA CB24X (LPG) | — | — | — | |
| ALPHA CB28X | 47-532-17 | 47-532-17 | — | — |
| ALPHA CB28X (LPG) | — | — | — | |
| ALPHA CB50 | 47-532-18 | 47-532-18 | — | — |
Showing 10 of 15 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 — CB24X (GC 47-532-14), CB24X (LPG), CB28X (GC 47-532-17), CB28X (LPG)
manualmanualALPHA appliance manual — CB50 (GC 47-532-18), CB50 (LPG)
manualmanualALPHA appliance manual — CD24C (GC 47-532-19), CD24C (LPG) (GC 47-532-29)
manualmanualALPHA appliance manual — HE CB25 (GC 47-532-25), HE CB25 (LPG) (GC 47-532-27)
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