Onga Tankbuddy OTB330W 0.65kW Submersible Manual Pump (Max 90LPM/340kPa)

The Onga Tankbuddy OTB330W is a compact, high-performance submersible pressure pump specifically designed for rainwater harvesting systems and treated water pump-out chambers. Built with an optimised multistage hydraulic system, the OTB330W delivers strong household pressure while maintaining lower energy consumption, making it ideal for residential rainwater supply applications.

Featuring a durable aluminium die-cast and stainless steel pump body, the Tankbuddy range is engineered for long service life in submerged conditions. The OTB330W manual model is designed to operate in conjunction with an external press control or switching device, allowing you to configure the system to suit your installation requirements. Suitable for clean, non-aggressive water with suspended solids up to 2mm, this pump provides reliable performance for everyday water transfer and pressure boosting needs.

According to the manufacturer technical data sheet the OTB330W delivers up to 33 metres of head (3.3 bar) and a maximum flow rate of 5600 L/h (approx. 86 LPM), making it well suited to supplying toilets, laundry, garden irrigation, and general household water reuse systems.

APPLICATION

• Rainwater tank supply to household fixtures
• Toilet and laundry reuse systems
• Garden irrigation pressure supply
• Treated water pump-out chambers
• Water transfer where reliable submerged pressure boosting is required

FEATURES

• 0.65kW (650W) absorbed power
• Maximum head: 33 metres (3.3 bar / approx. 270–330kPa operating range)
• Maximum flow: 5600 L/h (93 LPM)
• Multistage hydraulic design for improved efficiency
• Aluminium die-casting and stainless steel pump body
• Mechanical seal for durability
• New generation hydraulics with robust shaft design
• Inbuilt thermal overload protection
• Fully insulated cable connection chamber
• New cooling cavity design to extend motor life
• Handles suspended solids up to 2mm
• Manual model – designed for use with external press control or iWaterSwitch

SPECIFICATIONS

• Model: OTB330W (Manual)
• Power (P1): 650W
• Voltage: 230V / 50Hz
• Rated Current: 3A
• Maximum Head: 33m (3.3 bar)
• Maximum Flow Rate: 5600 L/h (93 LPM)
• Number of Impellers: 3
• Maximum Fluid Temperature: 40°C
• Maximum Immersion Depth: 7m
• Minimum Operating Space: 500mm diameter
• Pump Outlet: 1¼”
• Power Cable: 10m H07 RN8-F with ANZ plug
• Accessories Included: Adjustable hose connector for Ø15mm, 19mm and 25mm hoses