Onga Tankbuddy OTB450A 0.65kW Submersible Pump with Automatic Float Switch (Max 84LPM/270kPa)

The Onga Tankbuddy OTBIW450DR combines the trusted performance of the Tankbuddy submersible pump with the intelligent functionality of the iWaterSwitch, delivering a complete and energy-efficient solution for domestic rainwater harvesting and clean water pressure systems.

Built to operate silently when submerged, the 0.65kW Tankbuddy pump is designed for use in tanks, wells, or pump-out chambers. Its stainless steel construction ensures excellent corrosion resistance, while precision-moulded components deliver long-term efficiency and reliability. The integrated automatic float switch enables hands-free control based on water levels, making it perfect for water transfer, sump emptying, or use in conjunction with a pressure controller.

Paired with the iWaterSwitch, this system becomes even more powerful. The iWaterSwitch automatically selects between stored rainwater and mains water, ensuring a continuous water supply while maximising rainwater usage. Its LCD display shows real-time system data—including flow rate, pressure, current, and total rainwater usage—helping you monitor performance and track your water savings.

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