A diagnostic procedure used in plumbing systems involves introducing non-toxic smoke under pressure to identify leaks or breaches in the drainage, waste, and vent (DWV) system. This process effectively reveals even small imperfections that may be difficult to detect through visual inspection alone. For instance, smoke emerging from a crack in a pipe joint or a poorly sealed fitting indicates a potential source of sewer gas escape or water intrusion.
The significance of this testing lies in its ability to prevent costly property damage and potential health hazards associated with sewer gas leaks. Identifying and rectifying these issues early can minimize structural damage, reduce unpleasant odors, and mitigate the risk of exposure to harmful gases. Historically, this method has been a standard practice for ensuring the integrity of plumbing systems in residential, commercial, and industrial buildings.