Expansion vessel fitting 3/4 De Dietrich JJJ210000400

The expansion vessel fitting 3/4 is a crucial component for connecting an expansion vessel to a heating system. Designed with a standard 3/4 inch thread, this fitting ensures a secure and leak-free connection, helping to maintain proper pressure within the boiler. Whether you are installing a new vessel or replacing an old fitting, this part is essential for reliable system operation.