Low pressure is defined as what PSI and below?

• A. 150 PSI and below
• B. 151 PSI and below
• C. 75 PSI and below
• D. 200 PSI and below

Answer: (A)

The main idea here is where to draw the line between low and higher pressure, using 150 psi as the boundary. Low-pressure components, such as regulators and hoses designed for general delivery, are typically rated to handle up to 150 psi, so anything at or below that value is considered low pressure. Once pressure goes above 150 psi, the system is in a higher-pressure range that often requires different safety features, stronger materials, and higher-rated equipment. The other options miss this boundary: 151 psi and below would exclude 150 psi that should still be counted as low pressure; 75 psi and below is a stricter cutoff than commonly used; and 200 psi and below includes pressures that are clearly not low.