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The steam reciprocating pump lacks sufficient pumping capacity

2018-06-17View Original

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The following diagram is a simple flowchart of our system. Pump 2 is the upgraded pump, model 2QYR-30/1.2; this pump is used to draw liquid from the intermediate tank under negative pressure, but it cannot draw enough volume, while the backup pump, Pump 1, can do so (Pump 1’s model is QB-7). It should be noted that pump 2 pumps liquid from the plate and frame tank, which is an open-type tank. What is the reason why the inlet pressure needs to be specified when selecting a reciprocating pump?

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