Worcester Bosch DHW 3-Way Motorised Valve (18-30kW)

This Worcester Bosch DHW 3-way motorised valve is intended for compatible domestic hot-water control arrangements in systems identified by the 18–30kW reference. A motorised diverter or three-way valve routes water in the way required by the system design, helping direct heat to the appropriate circuit. It is a replacement or installation component that must match the specific appliance and hydraulic scheme.

Three-way motorised hot-water valve for specified Worcester systems

The product title identifies the 18–30kW range. The existing description associates it with certain Worcester Bosch heat-pump installations, but a power range alone does not establish compatibility. Valve size, motor supply, plug or lead, wiring logic, flow direction and manufacturer part number can all differ between systems.

Available sizes and buying options

• Product: Worcester Bosch DHW 3-Way Motorised Valve (18-30kW)

How to choose the right product

Before ordering, obtain the exact appliance or heat-pump model, serial or GC details where relevant, and the spare-parts diagram. Check whether the issue lies with the valve actuator, the valve body or a separate control fault. If an engineer has specified a particular Worcester part number, use that reference rather than guessing from an output band.

Installation and project considerations

A competent heating engineer should isolate electrical supplies and make the system safe before carrying out valve replacement. Confirm the mounting orientation, hydraulic connections, wiring and commissioning procedure from the appropriate Worcester Bosch documentation. The whole hot-water control sequence should be checked after installation.

Related materials and buying advice

Compare boiler accessories and parts before making your selection. You can also browse central heating boilers alongside this product, find complementary heating system components for the job, and consult our boiler buying guide for wider guidance.

Frequently asked questions

What does a DHW 3-way valve do?

It changes or directs water flow between relevant parts of a compatible heating and domestic hot-water system.

Will this fit every 18–30kW boiler?

No. Wattage or output alone does not confirm a match. Check the part number and exact Worcester system.

Can I replace only the valve motor?

That depends on the valve assembly and spare-parts options. Ask the servicing engineer to identify the failed component.

Is this a complete heating system?

No. This is a specialist motorised valve component.

Who should fit a DHW motorised valve?

A competent heating professional familiar with the equipment and its electrical and hydraulic controls.

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