Why is there no efficiency curve on the sixth-generation Kaiquan pump samples?
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As the title suggests, the efficiency curve should be an important factor to consider when selecting a pump. However, the KQW Kaiquan pump catalogs only provide one efficiency value, without showing an efficiency curve. Why is that?
Actually, there’s nothing special – once you choose the right model, the manufacturer can provide the performance curve for that model directly.
This post was last edited by 3983596_FPPZ on 2018-12-11 at 10:21. The efficiency of the pump is not considered a mandatory requirement (unless requested by the customer). Of course, customers prefer higher efficiency, but efficiency and net positive suction head are contradictory to each other – high efficiency inevitably leads to a poor net positive suction head. It is a matter of subjective trade-offs. Moreover, factors such as the pump’s hydraulic design capabilities, model accuracy, casting precision, machining precision, and assembly precision make it difficult to determine a fixed efficiency value. This is especially true for pumps that are manufactured in small batches as custom orders; controlling the efficiency value is even more challenging, and any assigned value is likely to be inaccurate. Providing such a value could also invite criticism from competitors, so it is better not to give one at all, and instead use an estimated efficiency value for calculating motor power. Unless efficiency is compared and discussed during the bidding process, it is indeed a capability of pump manufacturers; no specific requirements can be imposed. If you want the efficiency curve of a certain pump, everything will be available after placing an order. In this era of intellectual property rights, trying to get something for free won’t work
It’s useless even if you place an order. . .
It’s useful; if efficiency is a concern, GB3216 can be used to ensure that the efficiency values meet the required standards
There are no efficiency curves on the sample, nor any experimental values
Are no test data for the pump provided at delivery?
This post was last edited by 3983596_FPPZ on 2018-12-11 at 10:27. The data on the samples can only be used for product promotion and selection purposes; it is relatively rough, consisting of statistical values and averages, and should only be used as a reference. Ultimately, the performance parameters of this pump are based on the order contract (technical agreement), with the factory test report serving as the reference.
I understand the poster – they are not a purchasing officer but just a technician; the more information on the samples, the better. It would be great if prices could also be clearly stated there. As for having everything available after placing an order, that’s something that will happen in the future. The thing is, I want it right now:(