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Pump head issue

2015-07-19View Original

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The pump model is AY40-35×8. The designed head of this pump is 300 meters. Based on the model number, 35×8 equals 280 meters, which is not 300 meters. What’s going on?
Reply #22015-07-19
So this should be 280 meters.
Reply #32015-07-19
Then why is the nameplate on the pump at the site marked as 300 meters?
Reply #42015-07-19
This post was last edited by ylb913 on 2015-7-19 at 14:48. 300/35=8.57 or 8.6; it’s not clear what the allowable error is.
Reply #52015-07-19
Each pump model has a fixed curve for \"flow rate, head, and efficiency.\" In simple terms, the performance of a pump is represented by a curve...
Reply #62015-07-19
This pump has such a high head. . . What pump?
Reply #72015-07-20
For a head of 300m, does one need to multiply by the density of the deionized water used in methanol-to-hydrogen production, which is 35*8?
Reply #82015-07-20
The single-stage head of 35m specified for this model is the nominal head, or the head specified as part of the design requirements for this pump. A certain margin is often included in the design, which results in a higher actual head after the pump is manufactured; thus, the actual single-stage head of this pump can reach 37.5m.

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