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

• A. 100-120 psi
• B. 120-140 psi
• C. 150-174 psi
• D. 180-200 psi

Answer: (C)

Working air pressure range is about staying within what the bag was designed to do safely while delivering reliable lift. Multi-cell high-pressure bags are built to lift and stabilize heavy loads by distributing the force across several cells, and they’re rated for a specific operating window. If you inflate too low, the cells may not engage properly, the lift can be weak, and control under load becomes unstable. Inflate too high, and you push toward the bag’s limits, increasing the risk of over-extension, loss of control, or damage to the bag fabric and seals.

The recommended range around 150 to 174 psi sits right in that ideal operating window. It’s high enough to fully engage all cells for solid lift and stable support, yet well below the bag’s maximum safe operating pressure, minimizing risk during complex moves or shifting loads. The other options—significantly lower ranges—don’t utilize the bag’s high-pressure design effectively and can compromise lift and stability, while the higher range exceeds the intended safe operating limits.