Worcester 24 28 SI Expansion Vessel 87161425020

This Worcester expansion vessel 87161425020 is a genuine 8‑litre component designed for Greenstar and i Series heating systems. It functions to protect water heating systems from excess pressure, with an air-filled chamber that cushions pressure surges to support reliable, long-term operation. As a genuine Worcester product, it is supplied with a manufacturer guarantee, reflecting its compatibility and durability for compatible Worcester heating and hot water installations.

It is designed for use in Greenstar and i Series appliances and features a diameter of 389 mm. The vessel’s 8‑litre capacity and air cushion are engineered to help maintain stable system pressure, contributing to efficient operation and system protection over time. This expansion vessel is part of a genuine replacement parts range intended to maintain and restore performance in compatible heating and hot water systems.