What is the minimum bursting pressure of an oxy-acetylene hose?

What is the minimum bursting pressure of an oxy-acetylene hose?

• A. 350 psi
• B. 400 psi
• C. 450 psi
• D. 500 psi

Answer: (B)

Bursting pressure is the pressure at which a hose is expected to fail, so manufacturers build in a safety margin above the normal operating pressure. For oxy-acetylene systems, the working pressure is around 200 psi, and the hoses are designed to withstand well beyond that to cover pressure surges and accidental spikes. A common safety standard uses about a 2:1 margin, which leads to a minimum bursting pressure of 400 psi. That’s why 400 psi is the best answer—it represents the minimum rating that still provides an adequate safety margin. Values like 350 psi don’t meet that minimum, while 450 or 500 psi are higher ratings, not the required minimum. Remember to use hoses rated at or above this minimum and to inspect them regularly for wear or damage.

Bursting pressure is the pressure at which a hose is expected to fail, so manufacturers build in a safety margin above the normal operating pressure. For oxy-acetylene systems, the working pressure is around 200 psi, and the hoses are designed to withstand well beyond that to cover pressure surges and accidental spikes. A common safety standard uses about a 2:1 margin, which leads to a minimum bursting pressure of 400 psi. That’s why 400 psi is the best answer—it represents the minimum rating that still provides an adequate safety margin. Values like 350 psi don’t meet that minimum, while 450 or 500 psi are higher ratings, not the required minimum. Remember to use hoses rated at or above this minimum and to inspect them regularly for wear or damage.