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Method to improve the effective NPSH pump gear
Improve gear pump effective NPSH method: First, increase the gear pump liquid level in the tank before the pressure to improve the effective cavitation margin. Second, reduce the suction gear pump installation height. Third, the suction device into the inverted device, so that the gear pump fluid can flow to the pump inlet. Fourth, reduce the loss of flow on the pump line before the pump. Such as in the scope of the requirements to shorten the pipeline, reducing the flow rate in the pipeline to reduce the elbow and valve, try to increase the valve opening and so on. The above measures can be based on gear pump selection, selection and pump conditions such as the use of the site for a comprehensive analysis, appropriate to be applied.