About Bunyip Pumps
How the pump works
- Gravity causes water to flow down the supply pipe into a tyre
- This results in the tyre expanding, which pushes a piston that pumps the water
- The tyre then dumps the water - causing an impressive fountain
- The simple process repeats

Cost Savings Comparison*
Initial purchase
Startup Costs (Installation)
Maintenance
Ongoing running costs over 12 months
*Cost comparison is based on petrol powered pump of similar flow rate
What you need to know
The BUNYIP utilises the energy in falling water to pump water pump.
How much water you can pump depends on three factors:
- The ‘Fall’ (metres) via a weir or over some distance along a stream or a combination of both.
- The flow rate (Litres per sec) of the stream.
- The delivery head (metres) being the vertical height that the water is pumped.
The output table (last page) uses these three values as inputs to determine how much water you can pump every 24 hours.
- Click here to access the output and stroke calculator (excel document)
Bunyip Pumps
The Bunyip pump is a simple and compact unit which utilises the power of water to pump water.
Environmentally Friendly
Saves money & labour
Self-regulates to changes in stream flow
High efficiency
Light Weight
Straight forward Installation
Simple to operate & maintain
We build our pumps right here in Australia.
They are specifically designed to pump water without mains power or fuel costs.
