Series Grundfos - CR

Grundfos CR Series

The Grundfos CR series is a lineup of vertical multistage centrifugal pumps built for reliable water transfer and pressure boosting in commercial and industrial projects. These pumps feature a compact vertical layout that saves floor space in tight mechanical rooms. Models range from 0.37 kW to 11 kW and support 3x230/400V or 3x400V power. The clear naming system helps you quickly match stage count, motor power, and voltage to your system needs.

Modular Design for Quick Customization

Each CR pump uses a modular stage design, letting you add or remove impeller stages on-site to hit exact flow and pressure targets. This flexibility means you can adjust performance without swapping out the entire unit. The vertical orientation keeps the footprint small, while integrated suction and discharge ports simplify piping runs. Installers appreciate how fast the pump can be positioned, leveled, and connected to existing lines.

Efficient Motors and Steady Operation

All units come with high-efficiency HQQE motors that run cooler, draw less power, and handle varying loads smoothly. The closed impellers reduce internal wear and keep hydraulic efficiency high over time. Whether you are installing a small 0.55 kW pump or a heavy 11 kW model, the CR series delivers quiet, vibration-free performance. The balanced rotor and precision machining ensure stable operation, even in occupied buildings where noise matters.

Durable Construction for Long-Term Use

Built mainly from stainless steel, these pumps resist corrosion and handle clean water, heating loops, and light fluid transfer. The mechanical seal is engineered for extended service life and can be replaced without moving the piping. All wetted parts are chosen for compatibility with standard plumbing and HVAC fluids. The reinforced shaft and sturdy frame support continuous duty under changing pressure demands, giving contractors a reliable workhorse.

Simple Maintenance and Reliable Service

Upkeep is straightforward thanks to top-access design and standardized parts. You can check the impeller, inspect the seal, or replace bearings without breaking pipe connections. The modular stage system means spare parts are easy to find and swap across many models. This cuts downtime and keeps repair costs low. With proper setup and routine checks, the Grundfos CR series provides years of dependable service, making it a smart pick for professional installers.