Grundfos CRIE Vertical In-Line Multistage Pumps

Grundfos CRIE Vertical In-Line Multistage Pumps for Variable-Speed Pressure Boosting, Water Treatment, HVAC, and Industrial Process Systems

Grundfos CRIE Vertical In-Line Multistage Pumps are electronically controlled centrifugal pumps designed for applications requiring high pressure, efficient variable-speed operation, and stainless-steel wetted components. Combining the hydraulic design of the Grundfos CRI range with an integrated frequency-controlled motor, CRIE pumps are well suited for pressure boosting, water treatment, industrial process water, HVAC, cooling, circulation, and other systems with changing flow or pressure requirements.

The Grundfos CRIE uses a vertical, multistage centrifugal design with suction and discharge ports positioned at the same level in an in-line arrangement. Multiple impeller stages allow the pump to generate substantial head while the vertical configuration minimizes floor-space requirements, making CRIE pumps particularly useful in mechanical rooms, process skids, packaged systems, and industrial facilities where installation space is limited.

A key distinction of the CRIE range is its stainless-steel hydraulic construction. Grundfos CRI pumps use AISI 304 stainless steel for wetted components, providing good corrosion resistance for water and slightly aggressive compatible liquids. 

Variable-speed operation allows the CRIE to adjust pump performance according to actual system requirements. Instead of continuously operating at full speed and relying on throttling to control flow or pressure, the pump can reduce or increase motor speed as demand changes. This can improve process control while reducing unnecessary pumping energy in variable-load applications.

Features

• Vertical in-line multistage centrifugal pump design
• Electronically controlled variable-speed operation
• Integrated frequency converter
• Based on the Grundfos CRI stainless-steel multistage platform
• AISI 304 stainless-steel wetted components
• Good corrosion resistance for water and compatible slightly aggressive liquids
• Multiple impeller stages provide high-head capability
• Suction and discharge ports positioned at the same level
• Compact vertical design helps conserve installation floor space
• Variable-speed operation adjusts pump output to changing system demand
• Supports energy-efficient operation in variable-load systems
• Can reduce reliance on throttling valves for flow and pressure control
• Suitable for pressure-controlled pumping applications
• Suitable for flow-controlled pumping applications with appropriate controls
• Designed for cold and hot water circulation and pressure boosting
• Suitable for water treatment and industrial process systems
• Grundfos IE5 permanent-magnet motor technology available within the CRIE platform
• Integrated controls simplify variable-speed pump system design
• Suitable for new installations and upgrades from fixed-speed CRI pumps
• Designed for reliable continuous-duty commercial and industrial operation

Applications

• Variable-speed pressure boosting
• Commercial water supply
• Industrial water supply
• Water treatment systems
• Industrial process water
• HVAC systems
• Hydronic heating systems
• Hydronic cooling systems
• Cooling water circulation
• Boiler feed applications
• Filtration systems
• Reverse osmosis support systems
• Glycol circulation
• Wash and cleaning systems
• Temperature control systems
• Process water transfer
• Irrigation systems
  
• Packaged pump systems
• Process skids
• Constant-pressure systems
• Variable-flow water systems
• Energy-efficiency pump upgrades