The Worcester Bosch 87161410570 Flow Regulator Type E-W is a genuine replacement hydraulic component designed to stabilise and control water flow within your central heating system. This 10 litre blue regulator helps ensure balanced circulation through radiators and the boiler’s heat exchanger by maintaining a consistent flow rate, which in turn supports even heat distribution, reduced pump noise and improved overall system efficiency. Stable flow regulation also helps protect internal components from stress caused by irregular water movement and contributes to quieter, smoother operation.

This flow regulator is compatible with Worcester Bosch Greenstar series boilers that specify part number 87161410570 in their technical documentation. To ensure correct fitment and effective performance, always verify the part number on your existing regulator or consult your boiler’s service information before installation, as flow regulator types and capacities vary between models and system configurations.

Supplied ready for direct replacement, the 87161410570 Flow Regulator installs into the boiler’s existing pipework and integrates with original mounting points without modification when fitted by a qualified engineer. Choosing this genuine Worcester Bosch component helps restore correct flow characteristics in compatible Greenstar boilers, supporting reliable heating performance and efficient water circulation.