Worcester Bosch
Worcester Bosch Flow Regulator Type E-W-LP 9L 87186907080
Worcester Bosch Type E-W-LP 9L flow regulator, part 87186907080, for Greenstar 25Si Compact and 25i ErP combi models.
At a glance
- Part type: Flow regulator, hydraulics
- Also known as 1031247
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
£7.58
£6.32 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 Worcester Bosch 87186907080 is a Type E-W-LP flow regulator rated at 9 litres, used in the hydraulic group of Worcester Bosch Greenstar combi and system boilers. It controls the rate at which water moves through the hydraulic circuit, holding flow steady so the appliance can regulate domestic hot water and heating output predictably. It belongs to the Worcester Bosch flow regulators and governors range of spares.
Signs this part needs replacing
- Domestic hot water flow rate drops, or varies noticeably between draws
- Hot water temperature swings, or the combi cycles on and off during a draw-off
- Heating circuit flow is uneven, with some radiators slow to reach temperature
- Scale, debris or discolouration visible around the regulator body when the hydraulic block is opened
- Measured flow rate falls outside the appliance's specified range during a service check
Before you order
- Match the appliance GC number and model against the compatibility list; more than one hydraulic variant is used across the Greenstar range.
- Quote part number 87186907080 or the alternative number 1031247 when checking stock or existing documentation.
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Mechanical
| Part type | Flow Regulators & Governers |
|---|
Compliance
| Manufacturer part number (MPN) | 87186907080 |
|---|---|
| GC number | J08-269 |
| Barcode / EAN | 4051516833992 |
| GPC classification | Household Boilers/Furnaces/Tank Water Heaters Replacement Parts/Accessories |
| Alternative numbers | 1031247 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER GREENSTAR 25SI COMPACT LPG | 47-406-51 | 47-406-51 | — | — |
| WORCESTER GREENSTAR 25SI COMPACT NG | 47-406-50 | 47-406-50 | — | — |
| WORCESTER GREENSTAR 25Si ErP COMPACT LPG | 47-407-74 | 47-407-74 | — | — |
| WORCESTER GREENSTAR 25Si ErP COMPACT NG | 47-406-73 | 47-406-73 | — | — |
| WORCESTER GREENSTAR 25i ErP COMBI LPG | 47-406-61 | 47-406-61 | — | — |
| WORCESTER GREENSTAR 25i ErP COMBI NG | 47-406-60 | 47-406-60 | — | — |
| WORCESTER GREENSTAR 28Si ErP COMPACT | — | — | — | |
| WORCESTER WORCESTER GREENSTAR 25 SI COMPACT LPG | — | — | — | |
| WORCESTER WORCESTER GREENSTAR 25 SI COMPACT NG | — | — | — | |
| WORCESTER WORCESTER GREENSTAR 25Si ErP COMPACT LPG | — | — | — |
Showing 10 of 13 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.
WORCESTER appliance manual — GREENSTAR 25SI COMPACT LPG (GC 47-406-51), GREENSTAR 25SI COMPACT NG (GC 47-406-50)
manualmanualWORCESTER appliance manual — GREENSTAR 25Si ErP COMPACT LPG (GC 47-407-74), GREENSTAR 25Si ErP COMPACT NG (GC 47-406-73), GREENSTAR 28Si ErP COMPACT
manualmanualWORCESTER appliance manual — GREENSTAR 25i ErP COMBI LPG (GC 47-406-61), GREENSTAR 25i ErP COMBI NG (GC 47-406-60)
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