Piston pumps for demineralized water: our recommendations

Piston pumps for demineralized water are an indispensable solution for those working in industries where the purity of the treated fluid is critical. Used in applications ranging from the chemical to pharmaceutical industries, these pumps ensure reliability, precision and efficiency. However, choosing the right pump requires attention to factors such as construction materials, technical configurations and compatibility. 

With this article, we at Hawk will explore the features of piston pumps for demineralized water, tips for optimal selection, and common applications.

Features and functions of piston pumps for demineralized water

Piston pumps for demineralized water are essential tools for ensuring precision and efficiency in many industrial and scientific processes. Their design and functions are optimized to handle pure fluids such as demineralized water, which, lacking mineral salts, can be aggressive to some materials.

Here are the main features of these pumps:

• High corrosion resistance: they are built with materials such as stainless steel, special alloys and ceramics to resist the chemical aggressiveness of demineralized water.
• Precision in flow: they ensure consistent and controlled flow rates, which are essential for delicate processes that require uniform delivery.
• High and stable pressure: designed to generate high pressures efficiently, they meet the needs of advanced industrial applications.
• Ease of maintenance: modular components enable rapid maintenance and targeted replacements, reducing downtime.

Tips for selection and maintenance of piston pumps for demineralized water

Choosing and maintaining a piston pump requires special attention to several aspects, starting with construction materials. Demineralized water, being chemically aggressive, can accelerate corrosion and wear of components.

For this reason, it is essential to opt for pumps made of highly durable materials, such as stainless steel and/or Ecobrass, a special alloy of copper and zinc that offers superior protection against corrosion and ensures a long operational life.

In addition to material selection, it is also important to consider the compatibility of the pump with other fluids. In some situations, different additives or fluids may be used in addition to demineralized water. In these cases, it is essential to verify that the pump is designed to safely handle these substances, avoiding unwanted chemical reactions or damage to internal components.

Another key aspect concerns installation, which, performed correctly according to the manufacturer's instructions, is essential to prevent operational problems such as vibration and leakage. This not only ensures proper operation of the pump, but also optimizes its efficiency and durability.

Following these steps will achieve optimal performance and minimize the risk of downtime or inefficiency, ensuring flawless operation in even the most demanding applications.

Applications of piston pumps with demineralized water

Piston pumps for demineralized water find applications in various industries due to their ability to handle pure fluids with high efficiency:

• Pharmaceutical industry: in drug production, demineralized water is essential to ensure product purity and prevent contamination. Piston pumps are used to transfer and dose demineralized water in various production processes, ensuring accuracy and reliability.
• Power plants: demineralized water is used to feed boilers and in cooling systems, preventing scaling and corrosion. Piston pumps ensure efficient delivery of demineralized water in these critical systems.
• Cosmetics industry: in cosmetics production, demineralized water is used to ensure the purity of formulations and prevent unwanted reactions with other chemicals. Piston pumps enable precise dosing of demineralized water in production processes.
• Laboratories and research: demineralized water is crucial for obtaining accurate results in chemical and microbiological analysis. Piston pumps are used to supply demineralized water needed for various analytical equipment and processes.

Conclusions and the key role of Hawk

Piston pumps for demineralized water are therefore an indispensable solution for ensuring precision, efficiency and reliability in numerous industries and applications.

Hawk fields several models of pumps characterized by the absence of lead and using materials compatible with aggressive fluids, such as Ecobrass, which is ideal for demineralized water.

The NHDP Chemical and NMT Chemical series both feature pumps that can operate at a maximum pressure of 200 bar and a water temperature of up to 65°C (149°F) and are suitable for demineralized water applications, finding use in areas such as the food, chemical and reverse osmosis industries. 

The XLTI Chemical and MXT Chemical series, consisting of pumps capable of operating with a maximum pressure of 150 bar and a water temperature of up to 65°C (149°F), are particularly popular with regulators in the food and medical industries.

If you would like more information you need support in choosing the best solution for your needs, please contact us.

Our team of experts is available to answer any questions and guide you toward the best choice for your project.