By-pass plug -48- De Dietrich JJJ005207770

The by-pass plug -48- is a sealing cap used to close off a by-pass port or unused outlet in a boiler or burner system. It ensures that no fluid or gas escapes from the by-pass circuit when not in use. The -48- identifier indicates its specific dimensions or compatibility. This plug is typically made from durable materials to withstand system pressures and temperatures. It is a simple but important part for maintaining system integrity during installation or repair of heating equipment.