What is the primary function of shut-off devices in underground tanks?

The primary function of shut-off devices in underground tanks is to prevent overfilling. These devices play a crucial role in managing the safe operation of fuel storage systems by automatically stopping the flow of product when a pre-defined level is reached. This helps to minimize the risk of spills, which can lead to environmental contamination and safety hazards.

By ensuring that tanks do not exceed their capacity, shut-off devices protect against overflow that could occur during tank filling operations. This is essential in adhering to regulatory compliance and maintaining safe operational practices. Properly functioning shut-off devices contribute to the integrity and safety of underground storage tanks by preventing one of the most common issues associated with fuel storage—overfilling.