What type of valve can be operated by chains in the event of a gauge glass breaking?

A quick closing valve is designed to rapidly shut off the flow of fluid in the event of an emergency, such as a gauge glass breaking. This feature is crucial in preventing any potential hazards that could arise from a rapid loss of fluid, which might occur if a gauge glass fails. The ability to operate the valve via chains adds an important layer of safety and accessibility, as it allows for immediate action in an emergency situation even if conventional controls might be compromised or inaccessible.

The operational mechanism of quick closing valves is specifically suited for scenarios that require swift intervention to mitigate risks associated with high-pressure systems or critical fluid management processes. They are typically used in settings where maintaining safety and minimizing the impact of failures is paramount.