CR Series Multi-stage In-line Pump


The basic CR pump range, which can be applied in almost any industrial solution, is already in itself the broadest range available. Through our modular approach, we have made it even broader.
The basic CR pump range is available in four different materials: cast iron, two grades of stainless steel, and all-titanium. There are eleven flow sizes, capable of producing up to almost 50 bar of pressure, and with a variety of shaft seals, rubber materials and supply voltages.
Pump parts which are typically vulnerable to difficult liquids or particularly demanding operating conditions can be optimised for their purpose and designed for specific requirements.


CR pumps provide a complete range of pump solutions so that all applications, industrial and domestic, can benefit from the Grundfos touch. The applications that can be covered include the following:

  • Process water systems
  • Washing and cleaning systems
  • Seawater systems
  • Pumping of acids and alkalis
  • Ultrafiltration systems
  • Reverse osmosis systems
  • Swimming baths.

Technical Specifications

CR,CRI,CRN 1s-20

  • Liquid temperature range: -20˚C+120˚C
  • Working pressure: 25 bar

CR,CRI,CRN 20-150

  • Liquid temperature range: -30˚C+120˚C
  • Working pressure: 16-33 bar (Varies depending on pump model.)


  • Reliability
  • High efficiency
  • Service-friendly
  • Space-saving
  • Suitable for slightly aggressive liquids
  • High corrosion resistance
  • Single-pump solution making high pressures possible..


As a manufacturer of high-end appliances A.O. Smith claims to maximize user convenience and comfort. Therefore, we must be able to support and guarantee that our products run impeccably. Customer satisfaction throughout the service life of our products, that´s A.O. Smith´s promise.
By offering a comprehensive range of services (such as sizing, commissioning, service and maintenance) A.O. Smith validates that promise.