What type of valves should liquid level gauge glasses have?

Liquid level gauge glasses are devices that visually indicate the level of liquid within a tank or vessel. The inclusion of both manual and automatic valves in their design is essential for multiple reasons.

Manual valves allow operators to control the flow of liquid to the gauge glass, enabling maintenance or inspection of the gauge without needing to drain the entire system. They provide a level of operational flexibility and safety, allowing for manual intervention in line with standard operating procedures.

Automatic valves, on the other hand, enhance safety and efficiency by providing features that can prevent overflow or spilling of liquids. They can automatically shut off the flow when certain liquid levels are reached, minimizing the risk of accidents caused by human error.

By employing both types of valves, a liquid level gauge glass system can achieve a balance of manual control for maintenance with automated safety measures, ensuring reliable operation in a range of situations. This dual functionality is vital for maintaining safe and effective processes in industrial applications.