CRN Pump

The Grundfos CRN pump is a vertical, multistage centrifugal pump manufactured entirely from high-grade stainless steel, designed for applications requiring high pressure, reliability, and corrosion resistance. It is widely used in water supply, water treatment, industrial processes, pressure boosting, and reverse osmosis systems. The modular CRN design allows flexibility in materials, seals, motors, and configurations to meet a wide range of operating conditions.

All-stainless-steel construction (AISI 304 / AISI 316) for superior corrosion resistance
Vertical multistage design for high pressure with compact footprint
High hydraulic efficiency resulting in low energy consumption
Modular construction for easy customization and maintenance
Mechanical seal cartridge design for long service life and easy replacement
Wide operating range for flow and pressure
Suitable for aggressive and high-purity liquids
Compatible with VFDs (variable frequency drives)
Low noise and vibration levels

Typical Applications

Specification	Typical Range
Pump Type	Vertical multistage centrifugal
Flow Rate	Up to ~180 m³/h
Head (Pressure)	Up to ~300 m
Maximum Operating Pressure	Up to 40 bar
Liquid Temperature	−40 °C to +120 °C (higher with special seals)
Pump Material	Stainless steel AISI 304 / AISI 316
Motor Power	~0.37 – 75 kW
Motor Efficiency	IE3 / IE4
Supply Voltage	1-phase or 3-phase, 50 / 60 Hz
Protection Class	IP55 (standard)
Mechanical Seal	Single or double cartridge seal
Connection Type	Flanged or threaded (model-dependent)