A solution of sal ammoniac and water is commonly used for what purpose?

A solution of sal ammoniac and water is commonly used as a dip pot for soldering and brazing. This mixture helps to keep metal surfaces clean and free from oxidation during the heating process, which is essential for achieving strong, high-quality joints. The sal ammoniac acts as a flux that helps to lower the melting point of any oxides on the metal surface, facilitating a smoother flow of solder or filler material.

Using a dip pot in metalworking processes helps prevent contamination and ensures that the surfaces to be joined are in the best possible condition for adhesion. This technique is especially important in HVAC applications where reliable and strong joints are critical for system integrity and performance.

In contrast, while sal ammoniac has fluxing properties, it can be corrosive if not used properly, which is why understanding its application is vital in choosing the right method and materials for any HVAC project.