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Inlet Considerations
The job of the inlet is to convey the liquid from the inlet pipe to the impeller entrance in a fashion that imposes minimal loss, and creates the most uniform velocity profile at the impeller...
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Impellers
Selection of the proper type of impeller for your application can have a significant bearing on the applications ultimate success. We desire high efficiency but also need good reliability and a...
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Pump Motors
When selecting an electric motor it is important to select a motor that can develop enough horsepower to drive the pump. Often motors are selected to be non-overloading at the end of curve. This means...
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Pump Control
Many control options are available to system designers these days. We will discuss soft starts, variable-frequency drives, and multiple pump systems. Soft starters, reduce the current inrush and...
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Thrust Balancing
Radial loads When pumps operate away from their BEP, the pumps will generate uneven pressure forces inside the volute casing causing a radial thrust load on the impeller. The radial thrust load has...
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Minimum Storage Volume
The following discussion concerning wet well sizing is based upon the assumption of a low flow system, which is less than 3000 gpm. Systems with flows larger than 3000 gpm require additional...
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Hatch Sizing
So we now know what the minimum volume of the wet well should be to handle all inflow rates. We now need to select our wet well shape and size. This is an iterative process. A good place to start is by...
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Wet Well Diameter
Once we have determined our hatch dimensions, we can then size the diameter of the wet well. As an example, let’s assume that we have sized a minimum hatch 4′ long by 5′ wide. It might seem logical...
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Control Elevations
Now that we know our minimum storage volume as well as the size of our wet well, we can determine the system’s control elevations. In a duplex pumping system, there are 5 primary elevations of...
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Valve Selection
One of the universal similarities between all of the Jensen Engineered System products is that each system uses various kinds of valves. Valves enable the system to control the fluids that enter them...
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