Lewis® Compatible — Built for Strong Acid Service
Industrial Chemical & Petrochemical Pumps Manufacturer
EMAIL: info@chempumps.cn
Lewis® Compatible — Built for Strong Acid Service
Industrial Chemical & Petrochemical Pumps Manufacturer
EMAIL: info@chempumps.cn
Chemical plants, petrochemical refineries, and sulfur production facilities worldwide depend on sulfuric acid pumps that can withstand extreme corrosion, high temperature, and continuous duty cycles without failure. ChemPumps designs and manufactures specialized sulfuric acid pumps engineered for 92–100% concentrated sulfuric acid, fuming acid (oleum ≥105%), and mixed acid streams. Our API 610-certified pumps are proven drop-in replacements for Lewis pumps, with over 25 years of field-tested performance in Asia, Africa, Europe, and the Americas. Whether you require precision metering, high-volume transfer, or continuous recirculation, our full portfolio covers concentrated acid service across petrochemical, coal chemical, nonferrous metallurgy, and fertilizer industries.
Our sulfuric acid pump series is engineered for the toughest chemical processing conditions, delivering safe, stable, and efficient performance across high-concentration, high-temperature, and highly corrosive environments. Designed to handle concentrated sulfuric acid, fuming acid, and a broad range of industrial chemicals, this product line is the ideal solution for chemical plants, acid production facilities, wastewater treatment, and fluid metering systems. Whether you need a high concentrated sulfuric acid pump, a precision sulfuric acid metering pump, or a heavy-duty chemical transfer pump, our comprehensive product family ensures reliable operation even in the most demanding scenarios.
Engineered with advanced metallurgy, the pump’s internal components provide outstanding durability against corrosion, abrasion, and chemical attack. This makes our equipment suitable for 98%–105% sulfuric acid service, where material selection is critical. Our sulphuric acid pump material options include high silicon iron, special anti-corrosion alloys, fluoroplastics, and engineered composite materials—ensuring long service life and maximum safety.
For vertical installation environments such as acid storage tanks or deep wells, the vertical sulfuric acid pump offers strong structural rigidity and long-shaft stability. It supports continuous operation, smooth flow delivery, and minimal maintenance requirements—ideal for acid transfer and recirculation processes. In dosing applications, our acid dosing pump and metering dosing pump deliver high accuracy, wide flow adjustability, and stable pulsation control, enabling precise chemical addition in water treatment, neutralization systems, and chemical refining operations.
Our portfolio also includes high-efficiency chemical centrifugal pumps, engineered specifically for aggressive media. Their hydraulic design ensures excellent flow characteristics, reduced energy consumption, and stable operation during long-term industrial use. For general chemical handling, the industrial chemical pump, chemical pump, and chemical transfer pump lines offer broad applicability and compatibility with various chemical processes.
In facilities exposed to strong acid vapor and corrosion, our corrosion resistant pump and acid resistant pump models provide superior operational life and enhanced leak protection. The heavy-duty bearing frame, reinforced seal system, and corrosion-proof structure reduce downtime and extend service cycles—ensuring maximum ROI for industrial customers.
As one of the reliable sulfuric acid pump manufacturers, we offer customized design options to match your exact working conditions, including flow rate, head, temperature, concentration, and installation layout. Each pump is built for long-term performance, safe operation, and consistent chemical handling under extreme conditions. From high temperature acid pumps to precision metering systems, our full range covers all key needs in modern chemical production, guaranteeing stable acid transfer, accurate dosing, and low-cost maintenance.
If your application demands a dependable, corrosion-proof, and high-performance sulfuric acid handling solution, our sulfuric acid pump series is engineered to exceed expectations—ensuring safety, reliability, and efficiency in every industrial process.
Sulfuric acid pumping is not a commodity application. Concentrated sulfuric acid (H₂SO₄ 92–100%) and fuming sulfuric acid (≥105% oleum) are among the most corrosive industrial media. Standard centrifugal pumps fail rapidly under these conditions due to material degradation, seal failure, and internal leakage. Equipment downtime costs thousands of dollars per day, increases safety risk to plant personnel, and disrupts entire production schedules. The right pump, engineered with corrosion-resistant alloys, precision-engineered seals, and robust bearing assemblies, delivers reliable service life of 5+ years, reduces maintenance frequency, and ensures safe continuous operation. Material selection, seal technology, and shaft design are the three critical factors that separate reliable sulfuric acid pumps from failed equipment.
ChemPumps offers specialized pumps across four concentration ranges and duty types. Each product is designed to match your exact operating conditions: flow rate, head pressure, temperature, acid concentration, and installation method.
Our concentrated sulfuric acid pump series handles standard strong acid service in acid production, sulfur oxidation, and acid recovery operations. Built with high-alloyed ductile iron casing (B-2 material) and specialized shaft sleeve options (B-11, B-12, or B-13 Lewmet alloys), these pumps deliver corrosion rates as low as 0.05–0.2 mm/year. Rated for temperatures up to 110°C and continuous online operation. Browse concentrated sulfuric acid pumps →
Fuming sulfuric acid (oleum, ≥105% H₂SO₄) demands premium materials. Our high concentrated sulfuric acid pump range uses full Lewmet construction (B-11/B-12/B-13) for maximum corrosion protection in the most aggressive acid grades. Specified for chemical plants handling oleum, mixed acid streams, or recycled process acid. Browse high-concentration oleum pumps →
Precision dosing is critical in water treatment, neutralization, and acid recovery. Our metering dosing pump and acid dosing pump lines deliver flow accuracy ±5%, adjustable displacement from 10–100%, and integrated pressure protection. Built for long service intervals in harsh acid environments. Browse metering pumps →
Where heat recovery or exothermic reaction cooling demands higher temperature duty, our high temperature acid pump series extends operating range to 130°C+. Specialized seal geometry and thermal management ensure reliability in hot acid service. Browse high-temperature pumps →
Every sulfuric acid pump begins with material strategy. We offer five proven alloy systems, each matched to acid concentration, temperature, and service life targets:
| Material | Designation | Hardness | Corrosion Rate (93–98% H₂SO₄, 110°C) | Application |
| High-strength alloy ductile iron | B-1 | HB 300–380 | 0.1–0.3 mm/a | Pump shaft, high-stress components |
| Alloy ductile iron | B-2 | HB 250–350 | 0.05–0.2 mm/a | Casing, cover, internal passages |
| Lewmet1® (NiCr) | B-11 | HRC 42–52 | <0.05 mm/a @ 120°C | High-temp dilute & concentrated H₂SO₄, oleum, seal rings |
| Lewmet2® (904 alloy) | B-12 | HRC 35–42 | <0.05 mm/a | Shaft sleeves, bushings, seal assemblies |
| Lewmet3® (ultra-premium NiCr) | B-13 | HRC 20–26 | 0.025 mm/a @ 104°C, <0.1 mm/a @ 120°C | Impellers, pump internals, maximum corrosion protection |
For 92–100% H₂SO₄ service, B-2 casing + B-11/B-12 shaft is the industry standard, delivering 5+ year service life. For oleum or aggressive environments, full B-13 construction extends intervals to 7+ years. Contact our engineers to specify the right material system for your process.
Petrochemical refineries use acid pumps for sulfuric acid alkylation units, acid recovery, and feed distribution. High flow rates (50–500 m³/h) and continuous 24/7 duty demand robust design. Explore petrochemical pump solutions →
Coal chemical plants handle by-product acid streams, recycled process acid, and acid recovery. Variable concentration (40–98%) and frequent thermal stress require flexible material selection. Explore coal chemical pumps →
Copper, zinc, and nickel leaching operations rely on sulfuric acid pumps for ore processing, leach tank circulation, and acid recirculation. Corrosion rates must be <0.1 mm/a to meet cost targets. Explore nonferrous metallurgy solutions →
Phosphoric acid production uses sulfuric acid for phosphate rock digestion and acid recovery. Mixed acid, thermal stress, and suspended solids demand robust impeller design. Explore fertilizer industry pumps →
25+ Years of Specialized Expertise – Founded 1998, we have engineered sulfuric acid pumps for the world’s most demanding chemical plants. Every design reflects decades of field lessons and material science advances.
API 610 & CE Certified – Our pumps meet international petroleum industry standards (API Spec Q1) and European conformity requirements. Full traceability and quality documentation on every order.
Drop-in Lewis Pump Replacements – Our sulfuric acid pump designs are mechanically and hydraulically compatible with standard Lewis pump mounting, allowing seamless retrofit without piping changes.
Customized Material Strategy – We don’t sell “one-size-fits-all” pumps. Each order receives a material specification review matching your exact acid concentration, temperature, and service life targets.
5+ Year Service Life Guarantee – With proper material selection and maintenance, ChemPumps sulfuric acid pumps deliver industry-leading service intervals, reducing total cost of ownership.
Global Support Network – Operations in 30+ countries ensure rapid spare parts availability, localized technical support, and field troubleshooting wherever your pump operates.
For 98% sulfuric acid at 100°C continuous service, we recommend B-2 (alloy ductile iron) casing with B-11 or B-12 (Lewmet alloy) shaft sleeves and seal assemblies. This combination delivers corrosion rates of 0.05–0.1 mm/year and typical service life of 5–6 years. View our concentrated sulfuric acid pump specifications.
No. Standard iron or steel pumps fail within weeks under concentrated sulfuric acid exposure due to rapid corrosion, seal failure, and internal leakage. Specialized corrosion-resistant materials and precision-engineered seals are essential. Browse our complete sulfuric acid pump range.
Our portfolio spans flow rates from 5 m³/h (precision metering) to 500 m³/h (high-volume transfer), with discharge pressures up to 16 bar. Custom designs for non-standard requirements are available. Contact our sales team for flow/head calculations.
Yes. Our high concentrated sulfuric acid pump series is engineered specifically for oleum and fuming acid service (≥105%). Full Lewmet (B-11/B-12/B-13) construction ensures maximum corrosion protection in these extreme environments.
With proper material selection, our pumps require seal inspection every 6–12 months and bearing lubrication every 3 months during continuous operation. Planned overhauls typically occur every 3–5 years depending on acid concentration, temperature, and operating hours. Request a maintenance guide.
Yes. For tank mounting and deep-well applications, we provide vertical sulfuric acid pump configurations with long-shaft stability and rigid bearing frames. View vertical installation options.
Yes. Our sulfuric acid pump designs are mechanically and hydraulically equivalent to standard Lewis pumps, allowing drop-in replacement with no piping modifications. Upgrade your equipment reliability without facility downtime.
Ready to upgrade or specify a sulfuric acid pump for your facility? Our pump selection process is straightforward:
Get in touch with our engineering team → or explore our full sulfuric acid pump portfolio →
