Expansion vessel 18 litres De Dietrich JJJ210000380

The expansion vessel 18 litres is a critical component in closed-loop heating systems, absorbing excess water pressure as the system heats up. With an 18-litre capacity, it is suitable for many domestic boiler installations, helping to maintain stable pressure and prevent damage. This vessel is a common replacement part in boiler maintenance, ensuring the system operates safely and efficiently. When your current vessel loses its charge or develops a leak, this expansion vessel restores proper function.