Worcester Bosch
Worcester Bosch Plug-In Diverter Valve 490-440 87161424210
At a glance
- Part type: Diverter valves and hydraulics
- Also known as 1018193
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
£478.80
£399.00 ex. VAT · VAT at 20%
Call 01302 279234 to check availability
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The Worcester Bosch 87161424210 is a plug-in diverter valve, also referenced as 490-440. It is a hydraulic component used in Worcester Bosch 280 RSF appliances, where it controls the changeover between the heating circuit and the domestic hot water circuit. The plug-in format seats directly into the manifold housing rather than using a separate threaded connection.
Signs this part needs replacing
- Domestic hot water runs cold or only lukewarm while the heating circuit works normally
- Radiators warm up when only hot water is demanded at the tap
- No hot water draw-off despite the appliance firing
- Slow or intermittent changeover between heating and hot water modes
- Scale, debris or stiffness around the valve seating and plug-in connection
Before you order
- Confirm the appliance model and GC number against the compatibility list before ordering.
- Check the previous number ZAMAJ118 against the valve currently fitted to the appliance.
- Inspect the valve seating and seals; a replacement seal may be needed if the existing one is perished or deformed.
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Mechanical
| Part type | Diverter valves and hydraulics |
|---|
Compliance
| Manufacturer part number (MPN) | 87161424210 |
|---|---|
| GC number | 299-108 |
| Barcode / EAN | 4010009727125 |
| Commodity code | 8481 80 20 00 |
| GPC classification | Household Boilers/Furnaces/Tank Water Heaters Replacement Parts/Accessories |
| Alternative numbers | WB87161424210, 8-716-142-421-0, ZAMAJ118, 1018193 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER 280 RSF LPG | 47-311-11 | 47-311-11 | — | — |
| WORCESTER 280 RSF NG | 47-311-11 | 47-311-11 | — | — |
Documents & drawings
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