Grundfos UP 20-45 N 150 Circulator Pump

The Grundfos UP 20-45 N 150 circulator pump (reference 95906472) is designed for water circulation applications in heating systems, air conditioning, and other installations that require efficient and reliable water flow. Grundfos, a world leader in pump manufacturing, offers with this model a robust, durable, and high-quality solution that meets the highest market standards, ensuring optimal performance at all times.

High-quality design and materials:

The UP 20-45 N 150 model is made with premium materials, ensuring long service life and resistance under demanding conditions. The pump body is constructed from stainless steel EN 1.4301 (AISI 304), offering high corrosion resistance and making it ideal for working with a wide range of liquids, including water at various temperatures.

The pump's impeller is made from a corrosion-resistant composite (PES+30% GF), ensuring exceptional efficiency and durability against continuous exposure to water and other elements of the pumping system.

Encapsulated rotor technology:

The Grundfos UP 20-45 N 150 pump features an encapsulated rotor design, where the pump and motor form a completely sealed unit, preventing leaks and minimising maintenance. This design eliminates the need for mechanical seals, as only two gaskets are used for sealing. Additionally, the bearings are lubricated by the pumped liquid, reducing wear and ensuring quiet and smooth operation throughout the pump's lifespan.

The use of ceramic radial bearings and carbon axial bearings ensures high precision performance and wear resistance in applications where the pump is in continuous operation.

Hydraulic and technical performance:

The Grundfos UP 20-45 N 150 offers an excellent nominal flow rate of 2.29 m³/h, making it suitable for a variety of circulation applications in heating systems. Its nominal head is 2.94 m, allowing water to circulate efficiently in short or medium-distance distribution networks.

The equipment is designed to work within a liquid temperature range from -25°C to 110°C, enabling its use in different types of systems, whether in heating or cooling. The pump operates optimally with a liquid temperature of 60°C, making it an excellent choice for standard water heating applications.

Key technical specifications:

• Nominal flow rate: 2.29 m³/h
• Nominal head: 2.94 m
• Maximum head: 45 dm
• Maximum operating pressure: 10 bar, ensuring safe and stable operation in high-pressure systems.
• Maximum power: 120 W
• Liquid temperature range: -25 to 110°C
• Nominal voltage: 230 V, compatible with standard electrical networks.
• Internal thermal protection: No additional protection required, simplifying installation and maintenance.
• Protection rating: IP24, ensuring the pump is protected against water splashes, making it suitable for humid environments.
• Net weight: 3.54 kg, facilitating handling and installation in various types of systems.

Easy installation and maintenance:

The Grundfos UP 20-45 N 150 is designed for quick and easy installation thanks to its 150 mm port-to-port length and 1 1/4 inch (PN 10) connection type, making it compatible with a wide variety of piping systems. Additionally, its compact and lightweight design, with a net weight of only 3.54 kg, facilitates handling and mounting in any necessary position.

Maintenance of the pump is also minimal due to its encapsulated rotor design, which eliminates the need for external lubrication or additional motor protection. Furthermore, the integrated thermal protection ensures that the pump is always protected against overheating, reducing the risk of failures and prolonging the equipment's lifespan.

Advantages of the Grundfos UP 20-45 N 150 model:

• Corrosion-resistant design: Thanks to its stainless steel pump body and composite-resistant impeller, this pump offers excellent durability and resistance in water applications.
• Efficient and quiet operation: The liquid-lubricated bearings, along with the encapsulated rotor design, ensure smooth and quiet operation, ideal for heating systems.
• Integrated thermal protection: No additional motor protection is required, simplifying installation and reducing maintenance.
• Compatibility with multiple applications: Its wide range of operating temperatures (-25°C to 110°C) and its ability to work in extreme temperature environments make this pump suitable for a variety of water circulation systems.