CR vertical multistage centrifugal inline pumps

Overview

Overview

The Grundfos CR vertical, multistage, centrifugal in-line pump family works for water supply, water treatment and almost any industrial solution – including those for high-pressure, hot, dangerous, flammable and aggressive liquids.

The CR is available in millions of different configurations through four modules: 

  • Motors
  • Shaft seals
  • Pump modules
  • Connections.

We offer a “mix and match” modular approach, so you can configure a pump that meets your exact needs. We test, qualify and document all modules, just like we do for any standard Grundfos pump.

The basic CR pump range is available in four different materials: cast iron, two grades of stainless steel and titanium. Thirteen flow sizes are capable of producing up to 180 m3/h at 50 bar, with a variety of shaft seals, rubber materials and supply voltages.

We optimise pump parts that are typically vulnerable to difficult liquids or demanding operating conditions.

We also offer highly efficient “E” version pumps with a built-in frequency converter (CRE) or pumps with an external frequency converter (CUE). These combine the very best of pump technology with highly efficient motors and variable speed drives. You will never use more energy than you need.

Features

  • Balanced shaft seal
  • Wear-resistant bearing material
  • Laser-welded impellers
  • Energy-optimised pumps (EU minimum efficiency index (MEI) benchmark of MEI ≥ 0.70)
  • Premium efficiency IE3/IE4 motors
  • Easy service, minimimal downtime
  • High pressure
  • High temperature
  • Difficult liquids

Design

Vertical, in-line multistage

Technical data

Sizes: 13 – from 1-150 (basic pump range)
Head max: 50 bar
Flow max: 184 m3/h
Temperature range from -40 to 180 °C
Motor range from 0.37 to 75 kW
Material versions: CR, CRI, CRN and CRT

The CR family

ModelDescription
CR, CRE
Cast iron base and top, all wetted parts in stainless steel (EN 1.4301)
CRI, CRIEBase, top and all wetted parts in stainless steel (EN 1.4301)
CRN, CRNE
Base, top and all wetted parts in high-grade stainless steel (EN 1.4401)
CRT, CRTE
Base, top and all wetted parts in Titanium (ASTM B 265)
CRNE-HSCompact, high-speed single pump system for high pressure
CRN SFDouble pump system designed for high pressure and high flow

Note: For all variants from 22 kW and below, we offer an optional integrated or an external frequency converter from 0.37 to 75 kW.

Applications

  • Standard: For pumping water-like liquids for distribution of light treatment, we offer our standard CR or the CRI water pump.
  • Industrial: We have added further modular solutions to cope with very high pressures, very high temperatures, very aggressive, very corrosive or very dangerous liquids. The industrial range includes the CR, CRI, CRN and CRT lines.

 

Liquid natureLiquidApplication
High pressuresWater
Water Treatment
Filtration
Reverse osmosis
Steam boiler feed
Washing and cleaning
Industrial processes
Hot liquidMineral Oils
Boiler feed
Water
Washing and cleaning
ChemicalsIndustrial processes
Chemical industries
Aggressive or CorrosiceDesinfections
Acids
Marine and industrial processes
AbrasiveCleaners/degreasers, such as metasilicates
Washing and cleaning
Toxic or FlammableSolvents, fuels, alcohols, etc.Industrial processes
Industrial cooling
High-viscosityMineral-/synthetic oilsIndustrial processes
Industrial cooling
HardeningPaintsIndustrial processes
CrystallisingGlycol additives, naphthalene, sugar products (e.g. dextran), salts
Industrial processes
Industrial cooling

The Grundfos CR is suitable for

  • Industrial processing systems
  • Washing and cleaning systems
  • Pumping of acids and alkalis
  • Filtration systems
  • Water pressure boosting
  • Water Treatment
  • HVAC
  • Irrigation

Visit Grundfos Product Center for Technical details, Curves, CAD drawings, Manuals and Service: CR, CRE, CRI, CRIE, CRN, CRNE, CRT, CRTE, CRNE-HS, CRN-SF


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Benefits

  • Reliability
  • Solutions
  • Economy
Brochures

Brochures

 

CR – product brochure

CR Innovation Inside (System & Concept brochure)

The CR concept

Grundfosliterature-145810.pdf (2 MB)

CR – product brochure

Customised solutions (Product brochure)

The basic CR and NBG/NKG pump ranges, which apply to almost any industrial solution, constitute the broadest range available. With our modular approach, we have made them even broader.

Grundfosliterature-1973.pdf (3 MB)

CRT – Grundfos titanium pumps

Grundfos Titanium pumps (Product brochure)

CR Titanium pumps are an outstanding element in the well-proven Grundfos CR range of pumps. In Grundfos CRT pumps, all the components that can come in contact with the pumped liquid are made of titanium.

Grundfosliterature-1891257.pdf (203 KB)

CRN – MAGdrive

CRN MAGdrive (Product brochure)

Leaflet with information of CRN MAGdrive, which is used when pumping dangerous and aggressive liquids.

Grundfosliterature-2054.pdf (1 MB)

CRN – air-cooled top

CRN Air-Cooled Top (Product brochure)

Air-cooled Top: The Grundfos CRN Air-Cooled Top is specially designed to handle hot liquids; i.e. 120 °C - 180 °C. To make sure that the liquid temperature around the shaft seal does not exceed the level it can withstand, the pump is fitted with a special air-cooled shaft seal chamber generating the same insulation effect as the one of a thermos. To cool the pump, no external cooling is necessary; the ambient temperature is sufficient.

Grundfosliterature-2047.pdf (594 KB)

CR – ATEX approved CR pumps

ATEX approved CR pumps (Product brochure)

The ATEX approved CR pumps and motors carry a mark that shows which explosion category the pumps are designed for, and thus, in what kind of areas they can be used. The directive distinguishes between two explosion groups; group I and II. Whether it is a group I or II pump, depends on the level of danger of explosion in the area in which the CR pump is installed.

Grundfosliterature-2056.pdf (126 KB)

CRN – high pressure range

CRN high pressure programme (Product brochure)

Leaflet with information of the CR high pressure programme for applications, in which high pressures are decisive for a successful daily production.

Grundfosliterature-2052.pdf (445 KB)

CR – Grundfos LiqTec

Grundfos LiqTec (Product brochure)

Leaflet with information of the Grundfos LiqTec - dry running protection.

Grundfosliterature-2055.pdf (224 KB)

CRN – low NPSH

CRN Low NPSH (Product brochure)

Leaflet with information of CRN Low NPSH - a pump specially designed to eliminate the risk of cavitation and ensure reliable operation.

Grundfosliterature-2053.pdf (645 KB)

CRN – pharmaceutical

CRN Pharmaceutical (Product brochure)

CRN for pharmaticeutical applications

Grundfosliterature-1769865.pdf (194 KB)

CRT – for desalination

CRT for desalination (Product brochure)

In Grundfos CRT pumps, all components in contact with the pumped liquid are made of titanium

Grundfosliterature-1891258.pdf (204 KB)

CRT for industry

CRT for industry (Product brochure)

In Grundfos CRT pumps, all components in contact with the pumped liquid are made of titanium

Grundfosliterature-1891255.pdf (270 KB)

CRT for seawater

CRT for sea water (Product brochure)

In Grundfos CRT pumps, all components in contact with the pumped liquid are made of titanium

Grundfosliterature-1891256.pdf (227 KB)

Customised pump solutions

CUSTOMISED PUMP SOLUTIONS - Optimised for steam boiler feed (Product brochure)

Optimised for steam boiler feed

Grundfosliterature-2123624.pdf (2 MB)

CR – pulley head

CR pulley head (Product brochure)

Leaflet with information of the CR pulley head for applications in remote areas or in mobile applications where no electric power is available.

Grundfosliterature-2049.pdf (119 KB)

CR Monitor

GRUNDFOS CR MONITOR, Intelligent warning (Product brochure)

GRUNDFOS CR MONITOR, Intelligent warning

Grundfosliterature-1563858.pdf (864 KB)

CRE GRUNDFOS - Intelligent Efficiency by Grundfos

GRUNDFOS CRE - INTELLIGENT EFFICIENCY BY GRUNDFOS (Product brochure)

The renowned CRE pump has been upgraded with the latest motor technology to offer impressive energy efficiency that exceeds the IE4 levels, even including the energy consumption of the variable frequency drive.

Grundfosliterature-5133461.pdf (4 MB)

Cases

Cases

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