Hello everyone,
I’m evaluating cost effective proposals for a flood control pump system that also allows for convenient maintenance. One option is to install dry vertical non-self-priming pumps next to the wet well. The pumps would start with a water level on the wet well above the suction line of the pumps and would stop with a water level beneath the suction line of the pumps.
For priming the suction, I’m wondering if anyone has tried implementing a purge valve downstream of a check valve, allowing the system to purge the air as the water level goes up, but retaining the vacuum during pumping whenever water level is beneath the suction line of the pumps.
I’m attaching a drawing for clarity. Consider that NPSH has been verified. Other elements on the line include a foot valve with strainer and a check valve on the discharge, since another concern is keeping the suction flooded. Any advise or proposals are welcomed.
Thank you.
I’m evaluating cost effective proposals for a flood control pump system that also allows for convenient maintenance. One option is to install dry vertical non-self-priming pumps next to the wet well. The pumps would start with a water level on the wet well above the suction line of the pumps and would stop with a water level beneath the suction line of the pumps.
For priming the suction, I’m wondering if anyone has tried implementing a purge valve downstream of a check valve, allowing the system to purge the air as the water level goes up, but retaining the vacuum during pumping whenever water level is beneath the suction line of the pumps.
I’m attaching a drawing for clarity. Consider that NPSH has been verified. Other elements on the line include a foot valve with strainer and a check valve on the discharge, since another concern is keeping the suction flooded. Any advise or proposals are welcomed.
Thank you.