Where should a vacuum gauge be installed on a metering pump?

Installing a vacuum gauge on the inlet side of a metering pump is essential for accurately monitoring the pressure conditions the pump is operating under. By placing the gauge here, you can measure the vacuum level in the pump's intake line, which directly affects the pump's performance and efficiency.

A properly functioning metering pump requires specific inlet conditions to ensure that the liquid is drawn into the pump effectively. If there is too much vacuum, it may indicate a blockage or that the pump is having difficulty drawing liquid. Monitoring this pressure helps in troubleshooting suction problems and maintaining optimal pump operation.

In contrast, other locations, such as the outlet side, at the discharge valve, or near the pressure relief valve, would not provide the necessary information about the conditions influencing the pump's ability to draw in fluid. Thus, the inlet side becomes the most strategic point for the installation of a vacuum gauge in a metering pump setup.