For a comparison of domestic brand water pumps, could everyone recommend some brands?
Thread Content
Hello everyone. Regarding domestic brands, is the difference in quality, as well as in hydraulic models and efficiency, **not significant** among different manufacturers? For HVAC systems, pipeline pumps, horizontal centrifugal pumps, and double-suction pumps are used. The brands that have been used include Kaiquan, Nanfang, and Dongfang. Liancheng in Shanghai and Kenfulai in Foshan have inquired about the prices; since the prices were higher than those of the previous three brands, I haven’t used them. As I recall, the horizontal pipeline pumps made by Southern have good construction; they have a neat appearance, and the flow channels as well as the cast-iron impellers are fairly smooth. The appearance of the Kaiquan is a bit rough, and its flow channels as well as the cast-iron impeller also seem a bit rough. For double-suction pumps, one brand is Grundfoss; the hydraulic model of Kaiquan’s double-suction pumps is also quite good, and they undertake manufacturing on behalf of Grundfoss. May I ask, what is the difference between KAIQUAN and DONGFANG’s double-suction pumps? Under the same selection parameters, is the deviation between the actual operating efficiency under normal conditions and the rated efficiency specified in the product manual significant? Are Jiamusi and Nanyang the best places in China for explosion-proof motors? Please recommend some motor brands, both ordinary and explosion-proof ones. Recommend some well-known pump brands. Thank you! ! !
In the domestic market, Kaiquan has a larger share of the market and its prices are also reasonable； Kenfu Lai is a bit more refined
In China, joint ventures such as GCL, Sulzer, Fox, and Ruhr are the best options； Domestic brands: Grid, Deep Blue, Great ； The third tier includes Foshan Kenfulai, Changsha Nappe, Kaiquan, Nanfang, Dongfang, and Liancheng.
Thank you. I’ve never heard of or been aware of some of these brands before; I’ll go take a look.
The third floor is talking about chemical pumps, so you haven’t heard of them
For pipeline pumps, Southern Mold’s products are expensive. Kaiquan Dongfang started out by producing pipeline pumps and sewage pumps, and its products are quite good. As for double-suction pumps, it’s just a joke – a friend told me that Kaiquan uses foreign designs, while Dongfang has products available both domestically and internationally. In any case, both companies have optimized their own designs and also developed their own models. Didn’t you hear that Kaiquan won a bid for a nuclear pump recently?
It’s not very meaningful to compare pumps in this way; different fields and operating conditions result in different series offered by manufacturers. The poster should determine what kind of pump is needed based on the operating conditions you have, and then ask everyone to suggest pump manufacturers – that would be more reliable. Such as fluorine-lined pumps, such as magnetic drive pumps. Kaiquan, Nanfang, Dongfang, Shanghai Liancheng, Foshan Kenfulai – which of them can produce it? So, you can’t just look at the brand. . . Explosion-proof motors are available from Nanyang Jiamusi, as well as Xianda, Dazhong, Wannan, Xiangtan, and many others
Each company has its own strengths; the multi-stage pumps produced by Southern Stainless Steel are superior to those made by other manufacturers.
Hello. We mainly deal with central air conditioning, centralized heating, and cooling circulation pumps, all of which use water as the medium. For low flow rates, pipeline pumps and horizontal end-suction pumps are used, while for high flow rates, double-suction pumps are employed. For KAIQUAN, NANFANG, and DONGFANG pipeline pumps, there is not much difference in price among their horizontal pumps. I’ve used them all as well. The prices of double-suction pumps from Nanfang and Kaiquan are higher, while those from Dongfang are lower. I’m not sure if the price difference lies in the specifications, such as bearings, machine seals, etc. Explosion-proof motors are sometimes also used in the cooling cycles of factories. Overall, I don’t know much about the pump industry and pumps in general, so I’m asking for everyone’s opinions and comparisons on these brands. It seems that the model data for some brands is quite similar, giving the impression that they all come from the same set of models. There are some smaller and medium-sized brands whose model specifications seem good; the aforementioned large companies do not offer such models. It’s just not clear whether the actual performance will be as described in the manuals.
I see. We all mainly use clear water as the medium. I have no experience with chemical pumps.