Which manufacturers produce gear pumps that are well-known domestic brands?
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1. The normal flow rate is 120 L/h, for transporting 32% liquid caustic; currently a metering pump is used, and the problems are leakage and difficulty in adjusting the control valve. 2. We plan to switch to a magnetic gear pump with variable frequency control. Has anyone used gear pumps before? It is required to be leak-proof, fault-free, and capable of continuous operation. Looking for brand recommendations.
It is recommended that gear pumps have specific application ranges; first, find a manufacturer of gear pumps and then consult them, providing them with your requirements. The specific brand doesn’t matter; as long as it is a professional manufacturer that can meet the requirements, that’s fine. For reference.
We are currently using products from Hengsheng; the flow rate is around several dozen cubic meters. There aren’t many problems with the pumps, but the after-sales service isn’t very good. There are likely many domestic pumps with a capacity of several hundred liters available. Tianjin Zhaochuan once promoted such pumps, but we haven’t had the chance to use them yet. For smaller pumps, we use products from Barmag; they are slightly more expensive. It seems that there are also many manufacturers of gear pumps with low flow rates in Shandong. If precision requirements aren’t high, most domestic manufacturers can meet those needs. If leak-free performance is required, then magnetic drive pumps should be used, with frequency converters for flow rate control.