What should be checked using tri-cocks during a sight glass repair?

When performing a sight glass repair, checking the water level is essential because sight glasses are specifically designed to visually indicate the level of liquid within a tank or boiler. Tri-cocks, which are small valves located at different points along the sight glass assembly, allow for the isolation of the sight glass so that you can safely examine it while ensuring accurate readings.

When you open the valves of the tri-cocks, you can check the water level at various points, helping to confirm that the level indicated on the sight glass is accurate. This is crucial for safe operation, as maintaining proper water levels is vital to prevent boiling or overheating of a boiler. If the water level is too low, it can lead to equipment failure, while too high of a level can cause flooding and other operational issues. Thus, confirming the accuracy of the water level during sight glass repair is a fundamental step in maintaining safe and efficient boiler operation.