Concentrated sulfuric acid is not only corrosive, due to its large proportion, abrasive is also very strong. Therefore, the choice of concentrated sulfuric acid pump need to pay attention to several issues: 1, strong resistance to concentrated sulfuric acid corrosion, 2, the best also requires resistance to dilute sulfuric acid corrosion (which is to prevent the acid is diluted resulting in corrosion of the material) 3, concentrated sulfuric acid on the stainless steel or cast iron pump impeller is very large, so need to consider the selected equipment to wear. Recommendations: 1, material selection can be considered lined with PTFE pump, 2, you can choose PVDF pump ------ meet the requirements of both concentrated sulfuric acid and dilute sulfuric acid corrosion. 3, your actual process flow is very small, only about 7.5L / h (concentrated sulfuric acid density is generally 1.98, 15 / 1.98 = 7.5, the unit you can convert), so this pump suggest that you choose to import electromagnetic metering pump , Pump head material selection PVDF, diaphragm material selection PTFE. Such a pump not only meet your corrosive requirements, and there is no dynamic seal, will not leak, plus such a pump is a positive displacement pump, driven by the reciprocating diaphragm movement