Within the range of stainless‑steel centrifugal pumps, Calpeda has developed a new product offering a particularly compact, high‑performance, and versatile solution. With their small footprint, full stainless‑steel construction, impressive resistance, and reliability, the new NMX pumps are engineered to high standards to meet the demands of various sectors, including those with intensive operations even under intensive use.
Why choose the NMX stainless‑steel centrifugal pump
The new NMX stainless‑steel centrifugal pump is designed to deliver:
- Excellent hydraulic performance
- Maximum corrosion resistance
- Minimal footprint
- Versatility across numerous applications
Hydraulic efficiency benefits in choosing a stainless‑steel centrifugal pump
NMX pumps have been developed with rigorous fluid dynamic and mechanical design criteria according to strict hydrodynamic and mechanical design criteria, ensuring excellent performance across a wide range of applications. High hydraulic efficiency translates into lower energy costs, extended pump life, and improved system reliability. Maximizing hydraulic efficiency means optimal energy transfer from motor to fluid, minimizing internal losses and stress on components.
The use of stainless steel provides:
- Lower surface roughness: smooth surfaces reduce fluid friction, improving efficiency
- Dimensional stability and wear resistance: the impeller and pump body maintain their design tolerances and optimal geometry, delivering consistent performance over time.
- Resistance to fouling: smooth stainless‑steel surfaces prevent deposits, algae, and scale, preserving laminar flow and long-term efficiency.
Stainless‑steel centrifugal pump: guaranteed resistance & durability
Stainless steel inherently offers top corrosion resistance. NMX pumps have pump body, cover, impeller, and shaft all made of stainless‑steel, which makes them able to withstand harsh operating conditions and aggressive fluids, ensuring durability and reliability. NMX pumps are available in both AISI 304 and AISI 316 versions. The main difference is the presence of molybdenum, which makes AISI 316 steel even more resistant. The main difference lies in the presence of molybdenum, which makes AISI 316 steel even more resistant. Consequently, AISI 316 is the preferred choice when the already high resistance of AISI 304 may not be sufficient, such as in particularly corrosive environments or with liquids containing chlorides or chemical agents.
Compact design and customizable mechanical seals for any application
The compact, high-performing design of the NMX series easily integrates into existing systems and fit perfectly into tight technical spaces. Threaded connections simplify installation and maintenance. Mechanical seals can be selected based on fluid characteristics:
- Ceramic – for clean, non-abrasive fluids
- Graphite – self-lubricating, chemically compatible
- Silicon carbide (SiC) or tungsten carbide (Widia) – for abrasive fluids with sand or solids
O-ring materials vary according to chemical properties:
- FPM – for oils, fuels, and high temperatures
- EPDM – for hot water, glycol fluids, and aggressive alkaline liquids.
- PTFE – for highly corrosive chemicals
This modularity in seal material selection ensures optimal performance, enhanced operational reliability, and long-term durability, even in complex or demanding operating conditions.
Ideal applications for NMX stainless‑steel centrifugal pumps
Though suitable for residential water supply or water circulation in irrigation systems, the robust construction and hydraulic performance also make the NMX range particularly suitable for industrial and more demanding environments.
Pumps for car wash and industrial washing
NMX pumps are particularly efficient in industrial car wash systems, where reliability, chemical resistance and compactness are essential requirements. The stainless steel construction provides resistance to the detergents and demineralised water used in the washing process, while the compact design allows for easy integration into existing systems and spaces with limited room. Therefore, the NMX pump is an ideal choice for those looking for compact car wash solutions offering maximum reliability, hydraulic efficiency and reduced maintenance.
Pumps for industrial cooling plants and systems
The NMX pump is perfect for use in chillers, for constant circulation of the coolant. Design features, such as the optimized impeller and smooth stainless steel inner surface, ensure high hydraulic efficiency, even during extended operating cycles. The small footprint and threaded connections simplify installation, while the availability of customizable mechanical seals and gaskets resistant to different chemical and thermal conditions allows the pump to adapt to different types of refrigerants, ensuring long-term durability, minimum maintenance and maximum operational safety.
Pumps for liquid cooling systems in data centers
For data centre cooling, where reliability and temperature control are vital, NMX centrifugal pumps ensure high performance, ideal design for system integration and maximum coolant compatibility. Data centres are controlled environments, requiring high standards of cleanliness and absence of contamination. This is why stainless steel is the primary material of choice: it is corrosion-resistant and does not release particles into the fluid, which is crucial in data centres, where even small impurities can damage circuit components.
Explore technical details of the new NMX series and configure the perfect pump for your plant!
