Vaillant Boiler Brass Diverter Valve with Adaptor 0020132682

Product Overview

The Vaillant Boiler Brass Diverter Valve with Adaptor (Part Number: 0020132682) is a hydraulic control component designed for selected Vaillant heating systems.

The diverter valve forms part of the boiler's water circulation system, directing heated water between the central heating and domestic hot water circuits according to demand.

Part number 0020132682 is identified as a Brass Diverter Valve with Adaptor. The valve supports the boiler's ability to switch between providing heat to radiators and producing domestic hot water.

Correct operation of the diverter valve is important for reliable heating and hot water performance.

ℹ️ Product Condition Options:

This part may be available in New or Refurbished condition. Please select your desired option from the dropdown menu above. Refurbished components should be professionally inspected and tested to confirm correct operation and sealing integrity before installation.

Technical Insight & Common Failure Symptoms

The diverter valve is a hydraulic component that controls the direction of heated water within a combination boiler.

When domestic hot water is requested, the valve mechanism directs the primary heating water towards the domestic hot water heat exchanger. When central heating is required, it directs water through the heating circuit.

Over time, the diverter valve may experience internal wear, mechanical sticking, seal deterioration or leakage, which can affect its ability to switch correctly between operating positions.

Possible symptoms that may indicate a diverter valve or associated hydraulic system problem include:

• Central heating operating but domestic hot water not heating correctly.

• Domestic hot water working while central heating fails to operate correctly.

• Intermittent heating or hot water operation.

• Diverter valve failing to switch between heating and hot water positions.

• Radiators becoming warm unexpectedly during domestic hot water operation.

• Water leakage around the diverter valve body or connections.

• Valve mechanism sticking or failing to move correctly.

These symptoms do not necessarily confirm a faulty diverter valve, as similar problems may result from actuator faults, electrical controls, temperature sensors or other hydraulic components. Correct professional diagnosis should be carried out before replacement.

Compatibility

This part (MPN: 0020132682) is associated with selected Vaillant ecoTEC Plus and ecoTEC Pro boiler systems.

Please verify the exact boiler model, serial number, part number, valve configuration and electrical adaptor requirements against the manufacturer's technical documentation before ordering to ensure correct fitment.

Safety Advice

Boiler diverter valves and associated hydraulic components should only be inspected, removed or installed by a suitably qualified and competent heating engineer.

Always isolate the appliance's electrical supply and relevant water circuits before carrying out any work. Allow the system to cool and safely release residual pressure before removing the valve. Follow the manufacturer's servicing instructions and complete all required leakage, electrical and operational safety checks before returning the boiler to service.