How to select a pump for pipeline pressure testing
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I have always had a question regarding pumps: Suppose there is a 20-meter-long section of straight pipe with a DN100 diameter, vertically installed on the wall of a tower at a height of 50 meters above the ground. If pressure testing is to be conducted only on this section of pipe, how can one determine what specifications the pumping unit should have (such as head, flow rate, outlet diameter, and other relevant parameters) in order to fill this pipe with water? (I’ve always wondered that for a DN100 pipe 20 meters long filled with 80% water, the weight is quite significant; what pressure is needed to push it up? Does the head of this pump play any role in this?) ) I hope experts can help me out! Thank you first
It should be greater than or equal to the head at the highest point of the pipeline; as for the flow rate, it’s up to you – a higher flow rate means faster water injection, while a lower flow rate results in slower injection. The diameter depends on the pump outlet you choose.
The pump head has nothing to do with the total weight of the water in the pressure testing pipeline; that weight requires additional support. The head is determined only by height and pressure