The Worcester Bosch Expansion Vessel Assembly is expertly crafted to manage water expansion resulting from temperature fluctuations in heating and hot water systems. Featuring a robust design with a durable rubber diaphragm that separates two compartments, this vessel ensures consistent performance and long-lasting reliability.

Perfect for both sealed heating systems and unvented hot water cylinders, it plays a crucial role in maintaining optimal system pressure, thereby preventing potential damage from thermal expansion. This essential component enhances system efficiency and extends the lifespan of your heating system by effectively mitigating the risks associated with pressure changes.

• Designed for Worcester Bosch 12i/15i/18i/21i/24i boilers.
• Effectively manages water expansion in systems.
• Durable design with a rubber diaphragm.
• Ideal for sealed heating and unvented systems.
• Helps maintain optimal system pressure.
• Prevents damage from thermal expansion.
• Ensures reliable performance and longevity.