Welcome to this introduction to the Grundfos CR pump range. In this video, you will learn about the CR pump range’s applications, performance, build, and modular design. Let’s get started!

The CR pump range is a highly versatile vertical multi-stage centrifugal in-line pump solution, offering 16 different flow sizes and millions of variations. But the CR is more than just a water pump. It is a multi-purpose solution, suitable for a wide array of applications and capable of handling various liquids. Thanks to its robust design, the CR pump stands out as the most versatile and reliable choice for professional water supply and industrial applications. The range is globally compliant, meeting a wide range of international standards and legislation, including Marine Inspection Certificates and various test reports. It also supports multiple connection types for diverse applications, from low-pressure installations to high-pressure scenarios.

The CR pump range offers three distinct material options, making it suitable for a wide range of applications. First, the basic CR pump features a cast iron base and top, with all hydraulic parts made from stainless steel. This makes it perfect for water supply, water treatment, boiler feed, industrial cooling, and cleaning and washing applications. It can also be mounted horizontally, providing a flexible solution for applications where space is limited.

Next, we have the CRI pump, which upgrades all wetted parts and structural components to stainless steel. This higher quality construction enhances durability and performance.

For more demanding industrial applications, there's the CRN pump. It features high-grade stainless steel wetted parts, making it ideal for environments that require robust design and high corrosion resistance. This pump excels in offshore, industrial, and food and beverage applications, handling a variety of liquids, …including acids, chemicals, and brackish water.

Now, let’s look at performance… CR pumps operate in temperatures from -30°C to 120°C, with custom models extending from -40°C to 240°C. They feature in-house produced MG motors up to 22kW, with larger motors sourced from A-brand manufacturers. The CR pump range supports flows from 1 to 320 m³/h and pressures up to 40 bar. For higher pressure needs, options include a single e-pump high-speed solution or a double pump system. The double system consists of a standard feed pump and a specially constructed high-pressure pump.

The CR pump benefits from a modular approach to design and manufacture. This means that every part of the pump can be tailored to almost any requirement and adapted for custom solutions, including asynchronous or permanent magnet motors, various shaft seals and sealing systems, hydraulic parts made from diverse materials, and global connectivity.

But how do we manage a product that can be adapted to over a million different configurations?

We offer a broad range of standard CR pumps, covering essential flow and pressure areas, which are tailored to…regional approvals, supply, and connections.

For specialised needs, our CR pump configurator in the GPC customer tool provides extensive options.

For even greater customisation, support teams can assist in adapting pumps to precise customer requirements.

To ensure the CR pump range can operate at peak performance, three crucial parts of every pump are designed, developed, and manufactured in-house:

Motors

Shaft seals

Hydraulics

By producing these components in-house, the pumps benefit from enhanced reliability and cost-effectiveness.

CR motors are specifically designed for pump operation, featuring reinforced bearings and specialised grease to handle down forces. These enhancements result in a longer bearing life compared to standard motors, resistance to high inlet pressure, reduced sensitivity to high temperatures, and lower maintenance costs. CR shaft seals are engineered for long-lasting performance, even in challenging applications. Featuring wear-resistant faces and superior dry running properties, these seals offer wide application coverage through dedicated rubber configurations and a balanced design for high-pressure operation. The all-in-one cartridge seal ensures easy, fast, and safe replacement without dismantling the pump or removing the motor.

CR pumps offer best-in-class efficiency thanks to the design of their hydraulics. Small CR pumps feature 2D spot-welded blades, while larger impellers use 3D laser-welded blades. These laser-welded impellers, resembling airplane jet engines, have sharpened blade edges to cut smoothly through liquid, which boost efficiency and translates directly into cost savings, as the pumps use less power moving liquid from one point to another.