The Worcester Bosch 8716122434 expansion vessel 7 L is a genuine OEM pressure-management component designed to maintain stable hydraulic conditions within compatible Worcester Bosch Greenstar boilers and central heating systems. As water heats up and expands during normal operation, this expansion vessel absorbs the increased volume, preventing excessive pressure spikes that can lead to system faults, leaks, or safety valve discharge. Manufactured to original equipment standards, it delivers dependable performance, helps preserve system integrity, and contributes to quieter, more efficient heating operation.

This 7 litre expansion vessel is compatible with selected Worcester Bosch Greenstar boiler models and system configurations that specify part number 8716122434 for pressure management. Because compatibility can vary by model, system size, and installation type, it’s recommended to verify suitability using your boiler’s exact model number and GC number before purchase.

Key features of the Worcester Bosch 8716122434 expansion vessel 7 L include its genuine Worcester Bosch construction for assured quality and fit, appropriately sized 7 litre capacity to manage thermal expansion in typical Greenstar installations, robust internal diaphragm and pressure-rated body to withstand routine heating system demands, support for stabilising system pressure to reduce faults and prolong component life, and reliable performance when installed by a qualified heating engineer.