Closed Impeller Made from Corrosion-Resistant Copper Alloy

This high-end closed impeller is precisely cast from ZCuSn10Zn copper alloy. With a blade wall thickness of only 3mm, it combines high strength and corrosion resistance - it can withstand strong acid and alkali cleaning media with a pH value ranging from 1 to 13 (such as sulfuric acid solution and sodium hydroxide solution). Meanwhile, its thermal conductivity is 40% higher than that of stainless steel impellers, which can simultaneously cool the pump body sealing cavity and extend the service life of the mechanical seal. Its fully enclosed flow channel is finely ground, with a surface roughness Ra≤1.6μm. When transporting high-purity solvents and fine chemical reaction liquids in the pharmaceutical industry, there will be no risk of medium residue or contamination.   The curved surface structure of the impeller is precisely refined by a five-axis machining center, with the flow channel size error controlled within ±0.02mm, ensuring the performance consistency of different batches of…