Grundfos Inline Multiple-Stage

Grundfos inline multi-stage pumps are vertical centrifugal pumps featuring multiple impellers stacked within a single casing. They provide high-pressure capabilities suitable for applications that require an elevated water supply.

These pumps are designed with suction and discharge ports at the same level and are commonly used in water supply, water treatment, and industrial solutions, including those handling aggressive liquids.

Features & Benefits

Know more about the features & benefits of using Grundfos' Inline Multiple-Stage.

Equipped with high-efficiency motors, with some models using MGE motors that exceed IE5 standards.
Utilise a Grundfos cartridge shaft seal for enhanced reliability and reduced downtime.
Designed for easy maintenance and accessibility.
Capable of generating high pressures as a standalone pump solution.
Versatile solution made for various applications, including water boosting, industrial uses, and heating systems.
Inline design offers a space-saving solution for seamless integration into existing systems.
Provides a cost-effective single-pump solution for high-pressure needs.
Enhances operational comfort with quick control and monitoring features.
Features a maintenance-free cartridge mechanical shaft seal.
Optimised hydraulics contribute to higher efficiency.

Key Specifications

Here are the key specifications of Grundfos' Inline Multiple-Stage.

Liquid temperature: -40 - 150 °C
Max. flow: 336 m³/h
Max. head: 487 m
Max. operating pressure: 50 bar

Applications

Here is a list of industrial applications for which Grundfos' Inline Multiple-Stage are commonly utilized.

Industrial heating
Irrigation
Industrial water supply

CR | CRE

CRE

CRI CRIE

CRN

CRNE

CRNE-HS CRN-SF

Our Available Product Range for Grundfos Inline Single Stage Pumps

Grundfos inline multistage pumps are vertical centrifugal pumps specifically designed for high head applications. They feature multiple stages, with each stage comprising an impeller that draws in fluid and progressively increases its pressure. This design enables the pump to achieve higher head pressures compared to single-stage pumps.

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CR | CRE

The CR pump is constructed from rigid cast iron, with all wetted parts made of AISI 304 grade stainless steel. It offers exceptional efficiency along with high flow and pressure capacities, making it ideal for demanding applications such as liquid transfer, circulation, and pressure boosting of both cold and hot water, as well as in aqua-farming and field irrigation.

Advantages

Available in 16 flow sizes and hundreds of pressure sizes for tailored solutions.
Optimised performance and high hydraulic efficiency.
Balanced shaft seal.
Wear-resistant bearing material with a wide range of options for various fluids.
Laser-welded impellers.
A variety of connection types and flange sizes, providing flexibility and easy installation to any system.

Key Specifications

Liquid temperature: -30 - 120 °C
Max. flow: 336 m³/h
Max. head: 362 m
Max. operating pressure: 40 bar

CRE

The CRE is a versatile pump made from AISI 304 grade stainless steel and cast iron for enhanced durability. This range is available in various flow and pressure sizes suitable for applications such as water supply, washing, water treatment, boiler feed, chemical processing, temperature control, and mining. The CRE pumps feature a variable-speed drive (VSD), allowing them to continuously adjust performance to match current conditions and achieve the desired pressure, temperature, or flow.

Advantages

High performance with low energy consumption and costs.
Optimised to utilize the motor’s maximum power output.
Equipped with an efficient motor for increased efficiency and control.
Simple digital console for continuous monitoring of the pump.

Key Specifications

Liquid temperature: -30 - 120 °C
Max. flow: 244 m³/h
Max. head: 257 m
Max. operating pressure: 30 bar

CRI CRIE

The Grundfos CRI and CRIE inline, multi-stage centrifugal pumps are designed for liquid transfer, circulation systems, and pressure boosting of both cold and hot water, as well as slightly aggressive liquids. The CRIE pumps are equipped with a variable-speed drive and an efficient motor, offering optimal efficiency and control.

Advantages

Highest energy efficiency, reducing energy consumption and operational costs.
Constructed from AISI 304 stainless steel for excellent corrosion resistance.
Optimised performance and hydraulic efficiency.
Designed for deep-well pumping, capable of drawing water from depths of up to 90 meters.
Available in a wide range of sizes, flows, and pressures.

Key Specifications

CRI Pumps

Liquid temperature: -20 - 120 °C
Max. flow: 30 m³/h
Max. head: 252 m
Max. operating pressure: 25 bar

CRIE Pumps

Liquid temperature: -20 - 120 °C
Max. flow: 40 m³/h
Max. head: 256 m
Max. operating pressure: 25 bar

CRN

The CRN range offers a diverse selection of flow and pressure sizes. Constructed from high-grade AISI 316 stainless steel, the CRN is ideal for applications such as ultra-filtration, reverse osmosis, cooling lubricants for machine tools, distillation systems, swimming pools, oils, alcohols, acids, alkalis, as well as process water systems that handle a variety of challenging liquids. ATEX-approved CRN pumps are also available.

Advantages

High-grade AISI 316 stainless steel construction to manage challenging liquids in maritime applications and humid environments.
Available with an air-cooled top featuring a specialised air-cooled shaft seal chamber, allowing it to handle liquids up to 180 °C at a maximum pressure of 25 bar.
Lower NPSHr minimises pressure loss and improves hydraulic efficiency.

Key Specifications

Liquid temperature: -40 - 150 °C
Max. flow: 336 m³/h
Max. head: 406 m
Max. operating pressure: 50 bar

CRNE

The CRNE pump is entirely constructed from high-grade AISI 316 stainless steel, making it a high-efficiency inline multi-stage pump equipped with a built-in variable-speed drive suitable for handling industrial liquids. It is particularly effective in applications where all components in contact with the liquid must be made from high-grade stainless steel, especially for dangerous and aggressive liquids.

Advantages

All wetted parts are made of stainless steel, enabling the pump to manage aggressive, abrasive, toxic, hazardous, and odorous liquids.
Fitted with IE5 MGE and VSD for optimal efficiency and control.
High performance with low energy requirements and reduced costs.
Optimised to maximise the motor’s power output.

Key Specifications

Liquid temperature: -40 - 120 °C
Max. flow: 244 m³/h
Max. head: 294 m
Max. operating pressure: 30 bar

CRNE-HS CRN-SF

The single-pump CRNE-HS and two-pump CRN-SF are inline, multi-stage pump systems designed to withstand the extreme conditions of high-pressure applications. They are suitable for use in washing systems, water treatment facilities, industrial plants, boiler feeding systems, filtration, and reverse osmosis. The single-pump CRNE-HS can handle flow rates up to 5 m³/h, while the CRN-SF models are utilised for higher flow rates.

Advantages

Built from AISI 316 grade stainless steel for enhanced durability.
Designed to eliminate pressure stress from the sensitive shaft seal and manage high pressures.
Reliable, highly efficient, and space-saving design.
Available with a high-efficiency IE5 MGE motor featuring an integrated variable-speed drive.
Suitable for slightly aggressive liquids.

Key Specifications

Liquid temperature: -20 - 120 °C
Max. flow: 36 m³/h
Max. head: 487 m