This quick guide will have you reading pump curves in just a few minutes. While there are tens or maybe hundreds of pump manufacturers, and they all produce a unique line of pumps, most of those pumps fall into just a few broad pump design categories. Liquid-, gas- and vapor-handling expertise underpins SIHI’s unique ability to provide you with the optimum pumping system.

Disadvantages Of Vertical Centrifugal Pumps

The cost of various pipe sizes must be compared to the pump size and power cost required to overcome the resulting friction head. Some pump manufacturers will provide separate charts for operating the pump at different rotational speeds. We can then compare the performance to get a close match and then find an electrical motor which will suit this. Typically, higher rotational speeds lead to more service and maintenance so where possible it’s good practice to choose a lower speed pump that meets our systems requirements. Another option we have is to use variable frequency or variable speed drives. This basically takes the electrical supply and alters it to reduce the voltage and frequency which therefore alters the power of the motor and the speed of the pump.

In the case of this pump, the best-efficiency-point (BEP) falls at approximately 1075 GPM at 95 Ft, and efficiency at BEP is 84.1%. Move your cursor left to right within the graph and details from the three data points will appear in a caption box. The “Select Device” drop-down-menu will list all the ezeio controllers with Pump drivers in the group the dashboard is on and any groups lower on the same branch of the group tree. Select the desired controller to map the filter station data to the widget.

#5 Radial Flow Pump

The outer edge of the curve will step inwards towards the axis on all sides meaning a reduction in both outlet pressure and flow. Reducing a pumps speed is more efficient than reducing an impeller diameter as the clearances between the impeller tip and casing remain small. 2 pumps operating at 50% capacity will save more energy than one pump operating at full capacity. If a pump is operated too far left on its curve there is no allowance for extra capacity should there be miscalculation in system pressures. Too far to the right and there is the risk of cavitation which can destroy the pump casing and impeller very quickly and cause the liquid to boil.

Net Positive Suction Head required (NPSHr) is the minimum required pressure above the suction line to avoid cavitation issues at the selected flow rate. Our high-efficiency flow control systems help create fresh water for millions of people. Pumpsight analytics give you the information you need to keep your pumps running efficiently. Compare your pumps for energy efficiency, total cost, total flow, cost per acre-ft, and many other factors. We provided WS Series® duplex control panel systems equipped with Pump Portal®. Our controls offered more reliable pump protection and remote access to allow for enormous future savings in maintenance time and service hours.

Total Dynamic Head

Unlike turbine pumps that pull water up via a line shaft, submersible pumps push fluid to the surface, which improves efficiency and reduces the risk of cavitation. These submersible pumps are used for below ground operations, like sewage services and well pumps. Being underground, they’re also much quieter than other types of pumps. Vertical centrifugal pumps get their name from the fact that they are mounted vertically and can therefore take up less space than horizontal pumps. All Oracle Data Pump Export and Import processing, including the reading and writing of dump files, is done on the system (server) selected by the specified database connect string.