How much pump pressure is being established with a suction header of 10" Hg and pump header of 22 PSIG?

To determine the pump pressure established given a suction header of 10" Hg and a pump header of 22 PSIG, it is necessary to convert the suction pressure from inches of mercury to pounds per square inch.

The conversion factor for inches of mercury to psi is approximately 0.491 psi for every inch of mercury. Therefore, 10 inches of mercury can be converted to psi as follows:

10 inches Hg x 0.491 psi/inch Hg = 4.91 psi.

Next, this suction pressure is subtracted from the pump header pressure. The pump header pressure is given as 22 PSIG, which is the gauge pressure indicating the pressure above atmospheric pressure. To find the actual pump pressure (the absolute pressure), you need to add the atmospheric pressure (approximately 14.7 psi at sea level) to the gauge pressure, but for this specific calculation, we are only looking to find the total difference using gauge readings.

So, the total pressure available at the pump outlet, taking into account the suction pressure, can be calculated as:

22 PSIG (pump header pressure) + 4.91 psi (converted suction pressure) = 26.91 psi.

Since the options given seem to align closely,