What needs to be done with the bottom shut-off valve after installing new glass?

After installing new glass, the appropriate action to take with the bottom shut-off valve is to open it slowly. This step is crucial for a couple of reasons. First, it allows for a controlled flow of fluid or steam, which can help prevent sudden pressure surges that could damage the glass or the system itself. Rapid changes in pressure can lead to glass breakage or leaks at the installation points.

Opening the valve slowly ensures that all components adjust gradually to the new conditions, which promotes safety and the effective operation of the system. Additionally, this method provides an opportunity to monitor for any leaks or irregularities as the system begins to fill or pressurize, allowing for immediate action if any issues arise.

Other options may involve actions that could increase risks. For instance, closing it immediately would impede necessary pressure adjustments and could lead to further complications. Opening quickly could create a shock to the system, and keeping it closed would not allow for the necessary fluid circulation, leaving the system inoperable. Thus, the best practice is to open the valve slowly after the installation.