Pumps are indispensable general-purpose machinery, with a vast array of types utilized across all sectors of the national economy for fluid transfer—rendering them ubiquitous in countless applications. To address the diverse demands of different operational scenarios, a wide spectrum of pump designs has been developed. Pumps employed in chemical production, in particular, stand out for their large quantities, diverse configurations, and the need to handle corrosive media—often under harsh conditions like high pressure and high temperature. As a result, these pumps require specialized engineering, typically being more complex than standard pumps. Functioning as mechanical devices that elevate, transfer, and pressurize fluids, they convert mechanical energy into fluid energy to enable efficient fluid movement.

Acid-resistant pumps are specifically engineered and manufactured using acid-resistant materials, with their corrosion resistance primarily stemming from their construction materials. The wetted components (parts in direct contact with the fluid) of these pumps are generally crafted from non-metallic materials such as polyethylene (PE), polypropylene (PP), and perfluoroethylene-propylene copolymer (FEP). Polytetrafluoroethylene (PTFE), a key acid-resistant material, offers exceptional resistance to virtually all acidic media, supporting long-term stable operation in corrosive environments. For decades, selecting the right acid-resistant pumps has remained a critical concern in the chemical industry—improper choices can lead to equipment damage, operational failures, and even safety hazards or disasters.

Relevant statistics show that approximately 60% of equipment damage in chemical plants is caused by corrosion. Therefore, scientific material selection is paramount when specifying acid-resistant pumps. A common misconception is that stainless steel is a one-size-fits-all solution for corrosion resistance; however, its use can be highly risky in certain acidic environments, as it may be prone to pitting corrosion or stress corrosion cracking. Thus, rational selection of acid-resistant materials is essential for safe and efficient plant operations and chemical production processes.

With advancements in science and technology, acid-resistant pumps have grown increasingly vital across industries including chemical engineering, metallurgy, power generation, papermaking, food processing, pharmaceuticals, and synthetic fibers. Modern acid-resistant pumps feature wetted components molded from plastic alloys—optimized blends of materials like PTFE and FEP. These pumps integrate the strengths of various plastics, boasting superior corrosion resistance, high mechanical strength, and excellent anti-aging properties, making them the ideal choice for transferring a wide range of strong and weak acids.