Worcester Bosch
Worcester Bosch 3-Way Valve 8737602350
Worcester Bosch 8737602350 3-way valve for Greenstar 4000 System boilers, diverting flow between hot water and heating.
At a glance
- Part type: 3-way valve (diverter valve)
- Appliance family: Worcester Greenstar 4000 System
- Also known as 2248896
£52.36
£43.63 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 8737602350 is a 3-way valve used in the Worcester Greenstar 4000 System boiler family. It sits in the boiler's water circuit and diverts flow between the domestic hot water and central heating paths according to demand. As the valve moves, it opens one circuit while closing the other so the appliance can serve hot water or heating as required.
Signs this part needs replacing
- Domestic hot water runs cold or only lukewarm while the boiler fires
- Radiators heat up when only hot water is called for
- Hot water and heating cannot be run independently as expected
- The valve head does not move or feels seized when driven
- Intermittent or inconsistent output between hot water and heating demands
Before you order
- Confirm the boiler model and GC number against the fit list before ordering
- Check the existing valve part number matches 8737602350
- Verify whether the boiler is the NG or LPG variant, as both are listed
- Inspect the valve head and body for the actual fault before replacing the assembly
Compliance
| Alternative numbers | 2248896 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER GREENSTAR 4000 SYSTEM GR4700iW 12 S LPG | 41-800-08 | 41-800-08 | — | — |
| WORCESTER GREENSTAR 4000 SYSTEM GR4700iW 12 S NG | 41-800-07 | 41-800-07 | — | — |
| WORCESTER GREENSTAR 4000 SYSTEM GR4700iW 15 S LPG | 41-800-10 | 41-800-10 | — | — |
| WORCESTER GREENSTAR 4000 SYSTEM GR4700iW 15 S NG | 41-800-09 | 41-800-09 | — | — |
| WORCESTER GREENSTAR 4000 SYSTEM GR4700iW 18 S LPG | 41-800-12 | 41-800-12 | — | — |
| WORCESTER GREENSTAR 4000 SYSTEM GR4700iW 18 S NG | 41-800-11 | 41-800-11 | — | — |
| WORCESTER GREENSTAR 4000 SYSTEM GR4700iW 21 S LPG | 41-800-14 | 41-800-14 | — | — |
| WORCESTER GREENSTAR 4000 SYSTEM GR4700iW 21 S NG | 41-800-13 | 41-800-13 | — | — |
| WORCESTER GREENSTAR 4000 SYSTEM GR4700iW 24 S LPG | 41-800-16 | 41-800-16 | — | — |
| WORCESTER GREENSTAR 4000 SYSTEM GR4700iW 24 S NG | 41-800-15 | 41-800-15 | — | — |
Showing 10 of 20 compatible appliances.
Documents & drawings
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