Where should a check valve be placed in a pump station?

A check valve should be placed on the discharge side of the pump to prevent the backflow of water into the pump housing when the pump is turned off. This is crucial for maintaining system pressure and ensuring that water flows in one direction, reducing the risk of damage to the pump from reverse flow and maintaining the efficiency of the water distribution system.

When water is pumped, it moves through pipes and into the system; if the pump were to stop without a check valve in place, water could potentially flow back towards the pump due to gravity or other pressure changes. By having the check valve situated on the discharge side, it effectively closes automatically when reverse flow occurs, protecting the pump and ensuring that the water remains directed toward the distribution system.

The other locations mentioned, like the intake side or at the suction line, are not ideal for a check valve. A check valve on the intake would not effectively assist in the desired function of preventing backflow after pumping. Likewise, placing a check valve near a pressure gauge is unnecessary, as gauges are intended to measure pressure and should not interfere with the flow of water.