Guide to choosing the best piston pumps for aggressive liquids

Piston pumps for aggressive liquids are critical devices for conveying and handling fluids with poor material compatibility. These liquids can have corrosive effects, alter materials and compromise operational efficiency if not handled with the correct equipment. Piston pumps are often preferred for industrial applications that require precision and durability because of their ability to generate high pressures and handle liquids with specific characteristics.

With this article, we at Hawk will overview these pumps and analyze the best solutions currently on the market.

Pumps for aggressive liquids: why are they important?

When working with aggressive liquids such as acids and solvents, the pumps used must offer high performance and resistance. Materials in contact with the fluid must be able to resist corrosion and wear. For example, demineralized water is known for its ability to dissolve particles and can erode unprotected materials, while caustic soda requires pumps that can withstand its extremely corrosive alkaline effects. The use of pumps specifically for these fluids ensures that the integrity of industrial systems is protected, reduces the risk of leaks and failures, and ensures long-term operational efficiency.

Factors to consider when making the choice

Choosing the right piston pump for an aggressive liquid requires careful evaluation of several factors. The pump's construction material is crucial: stainless steels or special alloys (such as Ecobrass) may be suitable for handling corrosive liquids. Chemical compatibility between the liquid and the pump components is equally important to avoid damage to the system. In addition, the operating pressure and temperature of the fluid must be considered, as they can affect the life and performance of the pump. Maintenance and easy access to wear parts are also essential aspects that should not be overlooked.

Hawk's best piston pumps for aggressive liquids

Hawk offers high-performance solutions for handling aggressive liquids with its high-pressure piston pumps. The NHDP Stainless Steel Chemical Series, made of stainless steel, is specifically designed to withstand corrosive chemicals and salt water. These pumps are capable of operating at pressures up to 200 bar and provide a maximum flow rate of 11 liters per minute. Thanks to the stainless steel, this series of pumps offers long life and exceptional durability even in the most demanding applications, such as acid treatment making them ideal for critical industrial environments.

Another excellent option is the NMT Chemical Series, constructed of Ecobrass. This brass alloy is particularly suitable for pumping salt or demineralized water, and its nonferrous composition ensures superior wear resistance. NMT Series pumps can reach an operating pressure of 200 bar with a maximum flow rate of 21 liters per minute, making them a reliable choice for applications where demineralized water could cause erosion. In addition, thanks to Ecobrass, this pump series can be used in solvent applications.

Conclusions

Choosing the right piston pumps for aggressive liquids is critical to ensure the efficiency and durability of industrial systems. Whether handling demineralized water, solvents, acids or lye, pumps must be designed with materials and features that ensure durability and reliability over time. 

Hawk service is always available to help you find the ideal solution for your specific needs. Thanks to our experience in the industry, the support team can recommend the most suitable pump based on the characteristics of the fluid to be treated and the application required, ensuring tailored service to optimize your industrial operations. Contact us now for more information!