The Worcester Bosch 87174010120 Safety Relief Valve is a genuine replacement safety device designed to protect your boiler’s central heating system from excessive pressure. This 3 bar relief valve automatically opens to release water if the system pressure rises above safe limits, preventing stress on internal components such as pipework, seals, pumps and the heat exchanger. By maintaining pressure within a controlled range, the safety relief valve helps reduce the risk of leaks, component damage and boiler fault-lockouts, supporting reliable and safe operation.

This safety relief valve is compatible with Worcester Bosch Greenstar and RD series boilers that specify part number 87174010120 in their technical documentation. To ensure correct fitment and dependable performance, always verify that the part number matches your existing valve or consult your boiler’s service information before installation, as relief valve ratings and connection sizes can vary between models and configurations.

Supplied ready for direct replacement, the 87174010120 Safety Relief Valve connects to the boiler’s designated safety outlet and integrates with the system’s pipework when installed by a qualified Gas Safe engineer. Choosing this genuine Worcester Bosch component helps maintain proper pressure control, protects your heating system and contributes to consistent, trouble-free performance in compatible boilers.