Circulation pump IBO OHI 25-40 180 mm – inline heating/cooling circulator, 25/40 performance, 180 mm length

The IBO OHI 25-40 180 mm is a high-quality circulation pump engineered for efficient fluid movement in residential and light-commercial heating and cooling systems. This inline circulator is designed to maintain consistent flow rates, ensuring that heat is distributed evenly across radiators, underfloor heating loops, or heat exchangers. With its standard 180 mm installation length, it serves as a reliable solution for both new installations and as a direct replacement for existing units in compatible hydronic systems.

Advantages

This circulation pump offers robust performance and durability, featuring materials resistant to corrosion and wear. Its design prioritizes energy efficiency and quiet operation, making it an ideal choice for indoor environments where noise reduction is essential. The unit is built to withstand the demands of continuous operation, providing stable pressure and flow characteristics that help optimize the overall performance of your heating or cooling infrastructure.

Suitable for

• Residential central heating systems
• Underfloor heating manifolds
• Cooling and air conditioning circuits
• Heat exchanger circulation
• Replacement of standard 180 mm circulators

This pump may not be suitable for industrial-scale systems requiring high-head pressure or large flow volumes beyond its 25-40 performance class. It is also not intended for pumping aggressive, flammable, or chemically hazardous liquids, nor should it be used in systems containing high concentrations of abrasive particles that could damage the internal components.

Key specifications

• Installation length: 180 mm
• Performance class: 25-40
• Application: Heating and cooling systems
• Fluid compatibility: Water and non-aggressive glycol mixtures
• Mounting type: Inline

Installation should be performed by a qualified professional to ensure proper system integration. The pump must be installed in a horizontal position with the motor shaft kept level. Before starting, ensure the system is flushed of debris and that the pump housing is fully vented of air to prevent dry running, which can lead to premature mechanical failure.

What to consider before purchase

• Verify the installation length of your current pump matches 180 mm
• Check the pipe connection diameter to ensure compatibility
• Confirm the system pressure and temperature requirements are within the pump's operational limits
• Ensure the electrical supply matches the pump's voltage requirements

For optimal longevity, it is recommended to install a strainer or filter upstream of the pump to prevent sediment from entering the impeller chamber. Regularly check the system pressure and ensure the pump is not operated without fluid.