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Fluoropolymer-lined centrifugal pump for chemical applications

Publication Date:

2025-09-05

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A fluoropolymer-lined pump refers to a chemical centrifugal pump designed for industrial applications, featuring advanced manufacturing processes that integrate a robust metal casing with a high-performance F46 (fluoroplastic-lined) steel insert—molded in one seamless, high-temperature process. This design delivers exceptional corrosion resistance along with outstanding wear resistance, ensuring smooth operation, an ergonomically advanced and well-balanced structure, superior mechanical strength, strong pressure tolerance, excellent resistance to mechanical shocks, reliable sealing performance, and convenient maintenance for easy disassembly and inspection—all while boasting an impressively long service life. Additionally, these pumps are equipped with an external-mounted metal bellows mechanical seal, available in various friction pair combinations tailored to specific operating conditions: alumina vs. PTFE, silicon carbide vs. PTFE, or hard alloy vs. hard alloy.

Fluoropolymer-lined centrifugal pumps are widely used in applications such as: the transfer of corrosive media in chemical production, chlorine wastewater treatment and acid-addition processes in ion-exchange membrane caustic soda projects, electrolyte transportation in non-ferrous metal smelting, and pickling operations in automotive manufacturing. They are also essential in industries like pharmaceuticals, petroleum, electroplating, dyes, pesticides, papermaking, food processing, and more. These pumps can reliably handle strong corrosive media—such as sulfuric acid, hydrochloric acid, hydrofluoric acid, nitric acid, aqua regia, strong bases, and powerful oxidizers—at any concentration and over a wide temperature range from -20°C to 120°C, without sustaining damage.

Fluoroplastic-lined Centrifugal Pump Model Selection

IHF-type Corrosion-Resistant Fluoropolymer-Lined Chemical Pump This is a single-stage, single-suction, cantilevered chemical centrifugal pump designed according to international standards. All flow-through components are tightly lined with fluoroplastics, while the pump's load-bearing parts are made of metal materials. The pump body features a metal outer shell lined internally with F46 (or imported PFA high-temperature fluoroplastic). Meanwhile, the pump cover, impeller, and shaft sleeve are entirely fabricated by integral sintering and compression molding, with metal inserts encased in fluoroplastic. The shaft seal employs an advanced externally mounted bellows mechanical seal (for special operating conditions, a high-temperature, wear-resistant mechanical seal can also be used; alternatively, water-cooled seals can be supplied as accessories). Both the inlet and outlet are reinforced with cast steel bodies, significantly enhancing the pump's pressure resistance. This pump boasts exceptional corrosion resistance, wear resistance, and high-temperature tolerance, along with excellent aging stability, superior mechanical strength, smooth operation, an advanced and highly rationalized design, stringent and reliable sealing performance, convenient disassembly and maintenance, and an exceptionally long service life. It is available in two seal configurations: the WB2 externally mounted bellows-type seal and the IHF-N internally mounted double-end-face patented mechanical seal. With its well-balanced design and consistently stable performance, this product is widely applied in acid pickling processes in automotive manufacturing, acid and alkali production, paint-spraying techniques, electrolyte transfer during non-ferrous metal smelting, chlorine water transport in ion-exchange membrane projects, wastewater treatment, electroplating, and the agrochemical industry.

FSB Type Corrosion-Resistant Fluoropolymer-Lined Chemical Centrifugal Pump The flow-through components are entirely made of fluoroplastic alloy, featuring a compact design, simple operation, and an affordable price. The pump body, impeller, and pump cover are crafted by molding fluoroplastic over metal inserts. Both model types boast interchangeable pump housings, impellers, mechanical seals, and other components, making them highly popular among users. The pump’s shaft seal employs an external-mounted PTFE bellows mechanical seal, offering multi-layered protection that significantly extends the seal’s service life. When handling media containing abrasive particulates, the pump can be equipped with a single-end hard-to-hard (silicon carbide against silicon carbide) mechanical seal that requires no cooling water. Therefore, users should consider the solid content in the medium when selecting the appropriate model. These pumps are widely used in industries such as acid and alkali production, automotive pickling processes, paint-spraying techniques, wastewater treatment, electroplating, pesticide manufacturing, and electrolyte transfer in non-ferrous metal smelting, as well as chlorine water transportation for ion-exchange membrane projects.