Grundfos CRN Vertical In-Line Multistage Pumps

Grundfos CRN Vertical In-Line Multistage Pumps for Water Treatment, Industrial Process, Pressure Boosting, and Corrosive Liquid Applications

Grundfos CRN Vertical In-Line Multistage Pumps are designed for applications that require high pressure, compact installation, and enhanced corrosion resistance. Built with stainless steel wetted components, the CRN range is well suited for water treatment, industrial process water, pressure boosting, filtration, wash systems, and other applications where fluid purity or aggressive operating conditions make stainless steel construction important.

Like the broader Grundfos CR platform, CRN pumps use a vertical multistage centrifugal design with in-line suction and discharge connections. Multiple impeller stages allow the pump to generate high head while maintaining a compact footprint, making CRN pumps a strong choice for mechanical rooms, process skids, treatment systems, and packaged equipment where both space and pressure capability matter.

The key distinction of the CRN range is its stainless steel construction. This provides improved corrosion resistance compared with standard cast-iron-based configurations and makes the CRN especially useful for demineralized water, treated water, chemical process support, food and beverage utilities, industrial cleaning, and other compatible liquids that require more resistant wetted materials.

Grundfos CRN pumps are available in a wide range of sizes, stages, seal arrangements, and motor configurations, allowing the pump to be matched to different flow, head, temperature, pressure, and liquid requirements. The CRN platform also supports electronically controlled CRNE versions for variable-speed and demand-based pumping applications.

Features

• Vertical in-line multistage centrifugal pump design
• Stainless steel wetted construction for improved corrosion resistance
• Designed for high-pressure and demanding process applications
• Multiple impeller stages provide high head capability
• Compact vertical layout helps reduce floor space
• In-line suction and discharge connections simplify piping
• Suitable for high-purity and treated water applications
• Broad range of pump sizes and stage configurations
• Multiple mechanical seal options available
• Suitable for a wide variety of compatible industrial and process liquids
• Designed for efficient continuous-duty operation
• Supports customized configurations for pressure, temperature, and liquid requirements
• Useful for both new installations and stainless steel pump replacement projects
• Suitable for commercial, industrial, municipal, and process systems

Applications

• Water treatment systems
• Reverse osmosis support
• Demineralized water systems
• High-purity water applications
• Industrial process water
• Pressure boosting
• Filtration systems
• Boiler feed applications
• Cooling water systems
• Wash and cleaning systems
• Food and beverage utility systems
• Chemical process support
• Commercial water supply
• Industrial water distribution
• Process skids and packaged systems
• Corrosion-sensitive pumping applications