What is the maximum operating pressure for a relief valve and vacuum valves?

The maximum operating pressure for relief valves and vacuum valves is established based on safety standards and the operational limits of the devices. Relief valves are crucial in protecting systems from excessive pressure by releasing fluid when a predetermined pressure level is exceeded. In many industries, including water works, a standard maximum operating pressure for these valves is set at 150 psi.

Choosing this option reflects an understanding of the general manufacture specifications and engineering practices that dictate safe operating pressures. Exceeding this limit could pose significant risks, including valve failure or system damage, which is why it’s vital to adhere to these established standards.

Other pressure levels, such as 100 psi, 200 psi, and 250 psi, do not align with the standard practices observed for most relief and vacuum valves in typical water works operations, as they either fall below or exceed commonly accepted operational thresholds.