Onga Tankbuddy OTBIW450FL 0.65kW Submersible Manual Pump with iWaterSwitch Kit (Max 84LPM/270kPa)

The Onga Tankbuddy OTBIW450FL offers a high-efficiency, ultra-quiet pumping solution designed for domestic applications like rainwater harvesting and treated water pump-out chambers. With a powerful 0.65kW motor, corrosion-resistant stainless steel construction, and precision-moulded internals, this submersible pump delivers reliable and efficient performance for water transfer or pressure supply.

This model comes as a complete kit with the iWaterSwitch—an intelligent controller that automatically switches between rainwater and mains water as needed. Ideal for homes using rainwater for toilets, washing machines, or garden irrigation, the iWaterSwitch ensures seamless operation with real-time performance monitoring on its easy-to-read LCD display.

Whether you're pumping from a rainwater tank or switching between water sources, the OTBIW450FL is built to perform with minimal noise, low maintenance, and maximum water-saving potential.

APPLICATIONS

• Domestic pressure system (with Minipress or WaterSwitch), water transfer and tank or sump emptying (with float) of clean water

KEY FEATURES

• Stainless steel body provides strength and superior protection against corrosion
• Precision moulded internals for high efficiency and durability
• Coupled with a Minipress, or WaterSwitch this becomes a reliable automatic pressure system with loss of prime protection
• Dual lip seal
• Fully insulated cable connection chamber
• Inbuilt thermal overload
• Max. head - 27m
• Max. flow - 84lpm

iWaterSwitch

The all new iWaterSwitch is a fully automatic device designed to seamlessly switch between stored rainwater and mains water. It displays real time flow rate, pressure and current readings as well as recording rainwater used so that you can track your savings. Applications include using your rainwater for the washing machine, flushing the toilet, car washing and watering the garden.
• Fully functional LCD display
• Demand sensing by flowrate to prevent system cycling (Patent 2011244897)
• Direct acting solenoid for more robust and reliable operation