Can the outlet pressure and flow rate be adjusted by controlling the inlet valve of the centrifugal pump?
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There is a centrifugal pump with a head of 80 meters and a normal operating pressure of 3–4 kilograms. When the inlet valve is opened wide, the pressure exceeds 4 kilograms and the pump trips. Can the inlet valve be adjusted to control this?
No, according to the conditions provided by the poster, the pump inlet is not under pressure; the drop in pressure at the inlet is too large, which may cause cavitation in the pump.
No, it can only be controlled using an outlet valve
No, that can easily cause cavitation
A pressure control valve is installed at the pump outlet, and a return line is installed to the inlet.
The pump outlets are equipped with return pipes, which are controlled by return valves.
Use an outlet valve to regulate it; it’s easy to cause vacuum at the inlet, which is not good for the pump’s operation
Export controls, increasing pressure, overcurrent