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Centrifugal pump the correct method of installation
Centrifugal pump installation technology The key is to determine the pump installation height (ie suction). This height refers to the vertical distance from the water surface of the water source to the center line of the pump impeller. It can not be confused with the allowable vacuum height. The allowable vacuum height indicated on the pump manual or nameplate means the vacuum value on the water inlet section of the water pump, Is measured at 1 standard atmospheric pressure, the water temperature of 20 degrees Celsius, the test and measured. It does not consider the flow of water after the suction sleeve. The installation height should be allowed to suck the vacuum height deducted from the loss of suction pipe head, the remaining part of the value, it is necessary to overcome the actual topography absorbent height. Centrifugal pump installation height can not exceed the calculated value, otherwise, the pump will not pump water. 2. The impact of the calculated value is the size of the suction pipe lift loss lift, it is appropriate to use the shortest pipe layout, and try to install elbows and other accessories, but also consider the appropriate larger diameter pipes to reduce the flow rate within the pipe. 3. It should be noted that the centrifugal pump installation site elevation and temperature is different from the test conditions, such as the local elevation of 300 meters or more than 20 degrees Celsius was pumped water, the calculated value to be amended. Ie atmospheric pressure at different elevations and saturated vapor pressure above 20 degrees Celsius. However, when the water temperature is below 20 degrees Celsius, the saturated steam pressure is negligible. 4. From the pipeline installation technology, water pipes require strict sealing, can not leak, leaking water, otherwise it will undermine the pump inlet of the vacuum, so that the water pump to reduce the amount of water is not even pumping in serious cases. Therefore, we should conscientiously do the work of the interface of the pipeline to ensure the construction quality of pipeline connection.