The maximum installation height of a pump is determined by the difference in elevation between the pump and the destination point, as well as the friction losses and pressure requirements of the system. To calculate the maximum installation height of a pump, follow these steps:
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Determine the difference in elevation between the pump and the destination point. This is the vertical distance between the two points.
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Calculate the friction losses of the system. This is the pressure drop due to the resistance of the pipes, fittings and other components in the system. Use an appropriate friction loss chart or formula to calculate the friction losses.
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Determine the required pressure at the destination point. This is the pressure required to overcome the resistance of the system and deliver the required flow rate.
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Determine the static head of the system. This is the total height difference between the highest point and the lowest point in the system.
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Use the following formula to calculate the maximum installation height of the pump:
Maximum installation height = static head + friction losses + required pressure – elevation difference
Note that this formula assumes that the pump is located at the lowest point in the system. If the pump is not at the lowest point, adjustments will need to be made to the formula.
