What is the working air pressure range for high-pressure bags?

• A. 20-40 psi
• B. 60-90 psi
• C. 100-150 psi
• D. 200-250 psi

Answer: (C)

High-pressure bags are built to operate at a higher, controlled level of pressure to produce enough lifting force while keeping the bag compact. For most high-pressure rescue bags, the working range is about 100 to 150 psi. This range provides enough lift for heavy loads without pushing the bag beyond what its material and construction can safely handle.

If the pressure is too low, the bag won’t lift or stabilize the load effectively. If it’s taken well above the rated range, the bag can fail or rupture, creating a dangerous situation. The other pressure ranges are outside what these bags are designed to handle, which is why they aren’t appropriate. Always follow the manufacturer’s specifications and use a regulator to monitor and control the pressure during operation.