Bouchon de dérivation De Dietrich 7723697

The By-pass Plug is a small but important component used in heating systems to control flow through the bypass circuit. It helps maintain proper water circulation when radiator valves close, preventing pressure buildup and ensuring the boiler operates efficiently. This plug is typically installed in the bypass valve or manifold and must be correctly sized to achieve the desired bypass flow. A faulty or missing plug can cause system noise, pressure fluctuations, or reduced efficiency. Replacing it with this dedicated part restores correct bypass function. Ideal for maintenance or repair, this plug is a cost-effective solution for keeping your heating system running smoothly.