IBO OHI 25-40 180 Circulator Pump | 3-Speed Wet Rotor | 4m Head | G 1 1/2 inch

The IBO OHI 25-40 180 stands out from typical circulator pumps with its robust cast iron body and ceramic shaft and bearings, delivering quiet, maintenance-free operation for central heating and hot water systems. With three selectable speeds, it adapts to varying system demands, ensuring efficient circulation and consistent comfort.

Highlights

• Wet rotor design for quiet, low-maintenance operation
• Three speed settings (38W, 53W, 72W) for flexible performance
• Durable cast iron housing and corrosion-resistant Noryl impeller
• Ceramic shaft and bearings for extended service life
• IP44 protection class and insulation class F for safe operation
• Installation length 180 mm with G 1 1/2" connections

In daily use

Whether you're upgrading an existing installation or setting up a new system, the OHI 25-40 180 provides reliable circulation with a maximum head of 4 meters and a flow rate of up to 3.5 m³/h. Its compact size and standard connection size make it a direct replacement for many common pumps. The three-speed switch allows you to balance performance and energy consumption based on your heating needs, while the robust construction ensures years of dependable service.

Full specifications

• Max head: 4 m
• Max flow rate: 3.5 m³/h
• Power consumption: 38W / 53W / 72W (3 speeds)
• Voltage: 230V, 50Hz
• Installation length: 180 mm
• Pipe connection: G 1 1/2" (DN25)
• Number of speed settings: 3
• Protection class: IP44
• Insulation class: F
• Max system pressure: 10 bar
• Max liquid temperature: 110°C
• Min liquid temperature: 2°C
• Pump body material: Cast iron
• Impeller material: Noryl
• Shaft material: Ceramic
• Bearing material: Ceramic
• Pump type: Wet rotor circulator pump
• Application: Central heating, hot water systems

Final note

The IBO OHI 25-40 180 combines proven materials and precise engineering to deliver dependable circulation for residential and light commercial heating systems. Its three-speed flexibility and durable construction make it a smart choice for both new installations and retrofits.