What is the maximum air pressure for medium-pressure bags?

• A. 5 psi
• B. 10 psi
• C. 15 psi
• D. 20 psi

Answer: (C)

Medium-pressure airbags are designed to handle higher loads than low‑pressure bags but without the extreme forces of high‑pressure systems. They’re typically rated for a maximum inflation pressure of 15 psi. This limit keeps the bag strong enough to lift or stabilize heavy components while reducing the risk of fabric or valve failure. Inflate in small steps and monitor the bag, the load, and surrounding structures, always following the manufacturer’s maximum rating. The other pressures don’t align with the standard maximum for a medium‑pressure bag: 5 psi is typical of low‑pressure use, and 20 psi would exceed the common rating and increase the risk of failure.