What is the pressure range of the minimum valve in mine rescue equipment?

The minimum valve in mine rescue equipment is designed to function within a specific pressure range to ensure the safety and effectiveness of the equipment during emergencies. The correct understanding of this range indicates that the minimum valve is calibrated to operate at very low pressures—specifically, between 0.1 and 2.5 mbar. This low range is essential for maintaining adequate airflow and preventing potential dangers associated with higher pressures, such as equipment failure or improper gas delivery.

In the context of mine rescue operations, working within this pressure range allows for precise control over the air supplied to rescuers, ensuring that they receive the necessary ventilation without risking over-pressurization, which can lead to hazardous situations. The regulated pressure helps protect both the rescuers and trapped individuals by ensuring that breathable air is consistently provided under controlled conditions.

Understanding the essential function of the minimum valve and its pressure range is critical in the planning and execution of mine rescue strategies. It underscores the importance of safety measures built into rescue equipment.