Which gauge measures vacuum in inches of mercury and incoming water pressure in psi to the discharge side of the pump?

Which gauge measures vacuum in inches of mercury and incoming water pressure in psi to the discharge side of the pump?

• A. Intake/Compound gauge
• B. Discharge/compound gauge
• C. Tank to Pump valve
• D. Engine cooler Valve

Answer: (A)

A compound gauge on the pump panel is designed to show both suction vacuum and discharge pressure in one instrument. The intake (or suction) side reads vacuum in inches of mercury, while the discharge side reads pressure in pounds per square inch. This dual-reading setup allows you to monitor water supply conditions (vacuum) and pump output (pressure) simultaneously, which is exactly what the question describes. The other options are valves or a different type of gauge that don’t provide this combined measurement.

A compound gauge on the pump panel is designed to show both suction vacuum and discharge pressure in one instrument. The intake (or suction) side reads vacuum in inches of mercury, while the discharge side reads pressure in pounds per square inch. This dual-reading setup allows you to monitor water supply conditions (vacuum) and pump output (pressure) simultaneously, which is exactly what the question describes. The other options are valves or a different type of gauge that don’t provide this combined measurement.