Worcester Boiler Manifold Return Unit + Flow Turbine Adaptor + PRV 87161064420 87161064330 87161064310

Product Overview

The Worcester Boiler Manifold Return Unit, Flow Turbine Adaptor and Pressure Relief Valve (PRV) Kit (87161064420, 87161064330 & 87161064310) is a hydraulic replacement kit designed for use within selected Worcester heating systems.

The return manifold unit is an important part of the boiler hydraulic assembly, managing the return flow of water through the appliance. The flow turbine adaptor provides the connection and support for the flow sensing components, while the pressure relief valve (PRV) is a safety component designed to discharge excess system pressure when required.

Together, these components help maintain correct water circulation, flow detection, and pressure protection within the boiler system.

ℹ️ Product Condition Options:

This part may be available in New or Refurbished condition. Please check the available options from the dropdown menu.

Technical Insight & Common Failure Symptoms

The hydraulic assembly manages the movement and control of water through the boiler. Over time, internal wear, scale build-up, plastic component deterioration, or leaks may affect the performance of these components.

Typical symptoms linked to a faulty manifold return unit, flow turbine adaptor, or PRV include:

• Water leaks from the boiler hydraulic section
• Loss of system pressure
• Pressure relief valve discharge
• Incorrect flow detection or hot water performance issues
• Boiler locking out due to hydraulic faults
• Reduced heating or hot water performance
• Visible damage or deterioration of hydraulic components

Replacing worn hydraulic components may help restore correct water flow, pressure control, and reliable boiler operation.

Compatibility

Manufacturer Part Numbers (MPN):

• 87161064420 – Return Manifold / Return Unit
• 87161064330 – Flow Turbine Adaptor
• 87161064310 – Pressure Relief Valve (PRV)

This kit is designed for selected models within the Worcester Greenstar range.

Please strictly verify the manufacturer part numbers 87161064420, 87161064330 and 87161064310 against your boiler's technical manual, exploded parts diagram, or existing components before ordering to guarantee correct fitment.

Safety Advice

Boiler hydraulic components involve water pressure, heating system connections, and safety devices. Installation and servicing must be carried out by a Gas Safe registered engineer in accordance with current regulations and manufacturer instructions.