Which type of bag requires pigtails for use?

The correct answer is high pressure air bags. High pressure air bags are designed to operate at significantly higher pressures compared to low pressure alternatives. Pigtails are necessary for these bags because they facilitate the safe and effective connection to the air supply and help manage the high pressures involved.

Utilizing pigtails ensures that the connection points are secure and can handle the stress without risk of rupture or failure. This is particularly important in applications requiring precise and controlled inflation, where the integrity of the air system is crucial for performance and safety.

In contrast, low pressure air bags function differently and do not typically require pigtails as they operate under much less pressure, making their connection and inflation mechanisms simpler. Pneumatic and inflatable bags can encompass a range of designs and pressures but do not specifically denote the need for pigtails like high pressure air bags do, as their operational requirements can vary widely based on their intended use and engineering design.