AquaGravity
AquaGravity
Water pumps & farm equipment
Proven Australian technology for Africa· AquaGravity SA

Complete water pumping solutions for African farms

From gravity-powered Bunyip pumps working on drops as low as 300mm to Castle vertical multistage pumps. One supplier, every water solution.

Bunyip gravityCastle VMS
Calculate your water yieldWatch the pump run

Full design, supply & installation across South Africa.

Field footage
Bunyip PA-13 water pump

Pumping to a head of 36m off a 2.2m fall, 14,400L/day, with nothing plugged in.

More on how Bunyip works →
2
Pump technologies supplied
300mm
Minimum gravity drop
24 / 7
Continuous water delivery
100%
Design, supply & install
Interactive calculator

Pump output estimator

Estimate 24/7 water delivery from your stream drop and delivery height.

Supply head (drop)1.5m
Vertical fall from the water intake — needs differ by model, see below
Available stream flow4L/s
Flow volume entering the drive pipe
Delivery lift height30m
Vertical height up to the tank or trough
Bunyip Pump 8
—L/day
≈ — L/min continuous
Efficiency: —% of supply flow pumped
Contact for price
Bunyip Pump 13
—L/day
≈ — L/min continuous
Efficiency: —% of supply flow pumped
Contact for price
Bunyip Pump 16
—L/day
≈ — L/min continuous
Efficiency: —% of supply flow pumped
Contact for price

Estimate only — we confirm every site against the published model output tables, and zero power cost either way.

Verify with our tech team →
Complete water solutions

Pumps & equipment for every farm

From gravity-powered Bunyip pumps to Castle vertical multistage pumps — one supplier for your water needs.

All productsBunyip gravityCastle VMS
Bunyip Pump 4
In Development
Next in the Bunyip Pump range
Bunyip Pump 4
Min drop
TBD
Class
Compact
Status
In Development
Key specifications
✓Smallest model in the Bunyip Pump lineup
✓Built for the lowest-flow sites we see
✓Same gravity-only, zero-power operation
✓Register your interest for early access
AvailabilityIn Development
Register interest →Ask us
Bunyip Pump 8
Compact, low-flow sites
Bunyip Pump 8
Min drop
2 m
Max flow
4 L/s
Best for
Small streams
Key specifications
✓Smaller footprint for tight installations
✓Needs at least a 2m fall to run
✓Same zero-power, 24/7 operation
✓Licensed from Bunyip Pumps, Australia
AvailabilityEnquire for SA delivery
Get quote →Size it
Bunyip Pump 13
Popular
Australian-engineered gravity pump
Bunyip Pump 13
Min drop
300 mm
Max flow
8 L/s
Max lift
Up to 500m
Key specifications
✓Zero fuel, zero electricity, 24/7 operation
✓Works on supply drops as low as 300mm
✓Self-regulates as stream flow changes
✓Licensed from Bunyip Pumps, Australia
AvailabilityEnquire for SA delivery
Get quote →Size it
Bunyip Pump 16
High flow, high delivery
Bunyip Pump 16
Max drop
12 m
Max flow
16 L/s
Best for
High volume
Key specifications
✓Highest flow capacity of the Bunyip Pump range
✓Ideal for irrigation and multi-trough farms
✓No water hammer — gentler than a ram pump
✓Rubber seals, 6 months to 2 years
AvailabilityCustom quotation
Get quote →Size it
Photo coming soon
In Development
Larger-scale Bunyip Pump
Bunyip Pump 38
Min drop
TBD
Class
Large-scale
Status
In Development
Key specifications
✓Larger-scale addition to the Bunyip Pump range
✓Aimed at higher-volume farm and irrigation sites
✓Same gravity-only, zero-power operation
✓Register your interest for early access
AvailabilityIn Development
Register interest →Ask us
Photo coming soon
In Development
Highest-capacity Bunyip Pump
Bunyip Pump 42
Min drop
TBD
Class
High-capacity
Status
In Development
Key specifications
✓Highest-capacity model planned for the range
✓Aimed at the largest-scale water transfer sites
✓Same gravity-only, zero-power operation
✓Register your interest for early access
AvailabilityIn Development
Register interest →Ask us
Castle CDL vertical multistage
High-pressure vertical multistage
Castle CDL vertical multistage
Series
11 (CDL1T–90T)
Flow rate
0.4–240 m³/h
Pricing
On request
Key specifications
✓Castle-brand vertical multistage centrifugal
✓Robust stainless steel construction
✓Pressure boosting for homes and commercial sites
✓All 11 series available — get a tailored quote
AvailabilityQuote on request
Get quote →View series

Spec strips show the figures we can publish today — get in touch for a full model table for your site.

Real field footage

See the pumps in action

Farm installations, stream set-ups and mechanical walkthroughs — proving 24/7 power-free pumping.

The Bunyip Pump in the fieldField demo
On site, South Africa
The Bunyip Pump in the field

The full cycle: fill, expand, pump, dump — with nothing connected to it.

Learn moreRead more →
Weir, supply pipe and delivery lineApplication
Farm water supply
Weir, supply pipe and delivery line

How a site is laid out: where the fall comes from and where the water goes.

Learn moreRead more →
Self-regulation as flow changesTechnical
How it works
Self-regulation as flow changes

Low-pressure flow in, high-pressure flow out — no water hammer at all.

Learn moreRead more →
Why choose AquaGravity

One supplier for every water need

Gravity and Castle vertical multistage systems. Design, supply and installation across South Africa.

⚡
Zero electricity or fuel

The gravity range runs on hydraulic energy alone — no monthly power bill, no exposure to load-shedding or diesel prices.

🇦🇺
Australian engineering

The Bunyip Pump is manufactured under licence from Bunyip Pumps, Australia, and built for rugged South African sites.

📏
Low head operation

Where ram pumps need a big fall, the Bunyip Pump starts working on stream drops as low as 300mm.

🕐
24/7 unattended

Self-regulating action delivers water continuously to elevated tanks, reservoirs and stock troughs.

🔧
Full pump range

Beyond gravity we supply Castle multistage pumps for pressure boosting.

Get a quote for your site

Send the drop, the stream flow and the height you need to reach. We come back with the system, the expected yield and the price — installation included.

Get SA quoteWhatsApp sales