Knowing how it works and steps to protect against it are important

摘要

Anyone that has ever worked on rehabbing an older home has probably encountered a plumbing connection where, an old galvanized steel pipe that has been connected with a newer copper fitting such as shown in Figure 1 is in bad shape. The discovery of this condition may be purely accidental, or more likely, if such a connection has been in-place for any length of time, the ticking time bomb represented by this condition has finally gone off and it is leaking or broken.