What is the maximum working line pressure of fuel gas for an oxyacetylene torch?

• A. 10 PSI
• B. 15 PSI
• C. 20 PSI
• D. 30 PSI

Answer: (B)

The maximum working line pressure of fuel gas for an oxyacetylene torch is 15 PSI. This pressure is critical for ensuring safe and effective operation of the torch, as it allows for proper mixing of oxygen and acetylene, resulting in an optimal flame for welding and cutting applications.

Setting the pressure at this level helps to maintain a controlled environment, reducing the risk of flashbacks or other hazards associated with combustion. If the pressure is too low, there may not be enough fuel for effective operation, while higher pressures can lead to unsafe situations. Therefore, understanding and adhering to the maximum working line pressure is essential for safe welding practices with oxyacetylene equipment.