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Grundfos CR vertical multistage centrifugal inline pumps family works for water supply, water treatment and almost any industrial solution – including those for high-pressure, hot, dangerous, flammable and aggressive liquids.
Now, the range has been upgraded with a new, more robust generation of CR pumps (CR 95, CR 125 and CR 155), offering an optimised hydraulic design for world-class energy efficiency.
Thanks to a small footprint, the pumps are also easier and less costly to install than comparable pumps. The new CR pumps have been developed using simulation-driven design to perfect every single component and have been field-tested around the world, so you can install and operate the range with total confidence. For more information on the new generation of CR pumps.
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. In Grundfos Product Center
(GPC) we offer a large variety of CR pumps. Further, you can utilise the
configurator to customize the solution to your specific application.
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.
Grundfos DDI digital diaphragm dosing pump from 75 ml/h up to 150 l/h with real setting of the flow rate. The integrated high-performance microelectronics and the innovative speed-regulated drive technology produce a precise and continuous dosing guaranteeing consistent media mixing and process quality. The dosing rate is simply entered in liters per hour – and the pump takes care of the rest.
Digital Dosing
The use of stepper motor/EC drives optimizes control of the stroke speed and makes it extremely accurate. The duration of each pressure stroke varies according to the flow setting. The suction stroke time always remains constant but can be lengthened using the anti-cavitation function and thus adapted to the relevant needs. This way suction always takes place with the full stroke volume. This results in continuous dosing and lower pulsation in the dosing system – important factors in ensuring smooth pumping of outgassing media and in installations requiring longer suction lines.
Cost-effective dosing
DDI keeps energy costs at a record low, thanks to the advanced EC motor technology. Maximum efficiency is also ensured even by flows of 150 l/h
With a high accuracy of +/- 1.5 % repeatability throughout the adjustable range, DDI pumps reduce the consumption of chemicals by precisely dosing the required amount.
Areas of application
Paper production
Food and beverages industry
Industrial process water and sewage treatment
Drinking water treatment
Benefits:
High precision and ease of use
Flexibility Adaptability
Able to handle highly viscous media
High turndown ratio and functionalities allow large range of applications
Flow Control
Double PTFE diaphragm
Diaphragm leak detection
