Hunkin for gardening products, farm products
Glasshouses, greenhouses
Solar powered irrigation for greenhouses, hanging baskets etc
Fruit & vegetable cages
Bean & pea support frames
Rabbit and possum repellent. Traps
Grazers slug & snail repellent
LPG weed burner
Solar pumps
Mantis tillers & cultivators
Hunkin trimmer mower
DR trimmers and mowers
Leeaky Hose irrigation
Misting unit
Plant raising panels
Tunnel houses
Bait stations, pest control
Miniature Herefords
Clearance items
   
View shopping cart
Printable order form
Order information
   
Interesting links
Community work
About us
Contact us
Home
   

Solar powered pumps (we are the experts)


Solar pumpHunkin Garden Products have been selling solar pumps since 1995. Over this time we have always sold solar brushless pumps as opposed to brushed pumps. The reason for this is that brushed pumps use tiny brushes to transfer power to the rotating part (armature) of the electric motor and are in contact with it, so therefore wear away, causing pump failure. By contrast, our earlier brushless pumps are still working after 17 years.

Our pumps did away with the brushes and had an electronically generated rotating field to make the pump rotate, but this technology was expensive. However, like all new technology when it starts to become main-stream, the price drops, and this has happened with solar pumps and PV panels.

Solar pumps and PV panels (photo voltaic panels, often just called solar panels) are still a little more expensive than an equivalent mains powered pump, but with the increased price of electricity solar pumps can save you money, especially witth the larger wattage pumps. But the real advantage is the ease of installation. The moment you decide to use 230 volt mains by law you must use and electrician to wire up the power supply and that is when it gets expensive. Mains rated cable buried at least 600mm underground and weatherproof power pointsmake it very expensive. If you have obstacles like paths or driveways between your power supply and where your water feature is situated it becomes almost impossible. Solar also fits in well because fortunately when you need the water the sun is normally shining the most, so the pumps perform the best.

Solar systems provide a safe, economic alternative to running cable and they are very simple to install by the home user. Our systems are designed to just plug together so it could not be simpler. We use commercial grade solar panels that utilise toughened glass encased in aluminium frames. You will notice we use larger panels than the pump wattage would suggest you require. This is what we call "Hunkin overkill" and we do this because our focus is on performance, not price. It is a fact that panel outputs drop with temperature and with age. So a panel in the hot sun, while receiving a lot of sunlight, also gets hot, which reduces its output. A bit of a catch 22. Panels can also lose up to 20% of their output over time (this is normal) so having a bit of extra power means the panel will still be operating your pump in the future. Pumps, like most electric motors also need more power to initially start, so bigger panels means earlier starting during the day and continuous operation in less than ideal conditions.

All our solar pumps are driven by brushless DC motors. Our pumps are customised for solar application. Apart from the very cheap models (under $100) they are primarily designed for industrial applications so are of rugged construction with ceramic bearings. They must always be immersed in water when operating to lubricate the ceramic bearings or they will be severely damaged. Warranty is void if the pump is run without water. This is one reason why we don't like fountains. Sometimes on a windy day spray from a fountain can fall outside the pond and the pond can be emptied very quickly.

Our pumps connect directly to the panel, so when the sun shines (clear blue sky) they pump. When it is cloudy or raining they don't pump so well. The next question we are often asked is can we run the pumps on a car battery so it can operate at night. You can for a very short period (for instance if you have visitors at night) but a permanent solution is a lot more complicated. We won't get into too much detail but basically a car battery is designed for a short burst of high current to start a car. No battery likes going flat, and a car battery really doesn't. It can be done but it is expensive. For a permanent solution you need deep cycle batteries, a charge controller and extra panels to run the pump and charge the battery. Deep cycle batteries alone are $300 plus each.

Installation of our pond pumps is simple:

  1. Put the pump in the water. (Tip - Place the pump on a brick so it is not right on the bottom of the pond. This stops the pump from sucking up all the gunk from the bottom of the pond.)
     
  2. Mount the solar PV panel where it can receive full sun at midday. Face the panel towards true north at an angle of approx 40 degrees. The panel produces maximum output when it is a right angle to the sun because there is no reflection off the glass.
     
  3. Connect the panel to the pump. If the sun is shining the pump will start either immediately or after a 2 second delay, depending on the model. All electric motors need a lot more energy to start than to run, so our larger pumps have a soft start feature.

Pond pumps, how to select a system

The most important decision is to first work out how much water you want to circulate and at what height above the water you want the water to come out.

E.g: You want a waterfall 1 metre high but like all of us you can't really visualise what amount of water you want over it to make it look effective. Try this: Fill a bucket with 5 litres of water and pour it over your water feature, timing how long it takes you to empty the bucket. For instance, if you pour 2.5 litres of water over your water feature in 30 seconds and it looks really good then you need a pump that will pump 5 litres per minute at a 1 metre head. That is 300 litres per hour at a 1 metre head. Now look at the table below. These are our measured results, not some manufacturer's theoretical flow rates. ( I am standing on a ladder or a roof with a 2 litre milk container for some of these measurements)

  Litres per hour at height above water (head)
Model
Max flow
0.5m
1m
2m
3m
4m
8m
10m
13m
Micro
240
90
60
           
DC-40
360
327
288
240
180
120
     
50-02
600
400
396
360
288
     
DC50-B
1028
1028
1028
690
600
360
     
3P-3500
3500
3420
3120
2640
2040
1200
3P-1560
1560
1188
1170
1140
1110
1050
900
720
420

You can see from the table that the 50-02 pump would be for the above example the best pump to use because it can pump 396 litres per hour at a 1 metre head. Always choose the bigger pump system because these flow rates are measured under ideal full summer sun conditions and in reality you will not always get this result. Pipe work and fittings also contribute to head reduction. We have applied some "Hunkin overkill" to our panel selections so the pumps will perform well in less than ideal conditions. Tip: To make it look like you have a large flow of water going over your waterfall choose a very flat rock at the top for the water to flow over. A wide thin sheet of water gives the illusion of a big water flow when it really isn't.

 

Solar pump testing to determine pumping volumes at different heads. Water is pumped into a 2 litre milk container and the time taken to fill it is recorded, very technical! From that we calculate the amount of water at any given head. This way we can be sure that when we say a pump will pump to a certain height, it will.

Our pumps are pumps designed for industry and we have adapted them for home use along with filters. The price list below is for pump and panel plus pump on its own for those who want to supply their own panel. There is a 1 year warranty on the pumps and 10 years on the panels. Please note: None of our pumps are suitable for swimming pools where chlorine is used. Chlorine is very corrosive and will lead to premature failure of the pump. Fresh water only. The water must also be clean, so pumping out of a creek is not recommend.

New for 2015

We have been testing solar pumping systems over winter in response to customers wanting smaller and larger pumps than the ones we currently offer. Small pumps that can go in very small ponds and large pumps that can pump large volumes of water to greater heights. The new super pumps use 3 phase technolgy to produce a much stronger turning force which makes them very powerfiul for relatively low power.

MICRO PUMP

Our smallest pump is our little micro that we connect to a 30 watt solar PV panel via our controller (picture right). By using a 20 watt panel with our controller this pump will still operate in light cloud and will run for most of a summer's day.

This pump is so small it is ideal for placing in shallower ponds. The only catch is you must make sure the pump never runs dry so the pond must be deep enough to make sure water is always covering the pump. The pump size is 40mm L x 40mm W x 30mm H. It can pump a maximum of 240 litres per hour and has a useful head of about 1m. The outlet is 8mm. The output is adjustable. Fresh water only. 12 month warranty.

New for 2016

DC- 40 pump

This pump fills the gap between our Micro pump and the 50-02. We connect directly to a 40 watt solar PV panel. A powerful little pump that pumps a reasonable amount of water to quite a high head.

This pump needs at least a 200mm of water depth and like all the other pumps must not be allowed to run dry. The pump features ceramic bearings for longer life. The pump size with filter is 150mm L x 60mm W x 70mm H. It can pump a maximum of 360 litres per hour and has a useful head of about 5m. The outlet is 8mm. Fresh water only. 12 month warranty.

DC-50B pump

This pump fills the gap between our 50-02 pump and our larger 3P models. We connect directly to a 60 watt solar PV panel. A powerful little pump that pumps quite a lot of water to a 5m head.

This pump needs at least a 200mm of water depth and like all the other pumps must not be allowed to run dry. The pump features ceramic bearings for longer life. The pump size with filter is 160mm L x 70mm W x 100mm H. It can pump a maximum of 1028 litres per hour and has a useful head of about 4m. The outlet is 19mm. Fresh water only. 12 month warranty.

HIGH VOLUME, 3500 litres / hour, 5 metre head

Model 3P-3500 is a 24 volt pump rated at 86.4 watts and is capable of moving 3,600 litres an hour.This is a high volume pump with a respectable pumping height. We drive this pump with a 125 watt 24 volt solar PV panel via a special controller. This pump is ideal for a large pond, if you want an impressive waterfall, or for circulating water in a small lake.

3P-3500 Specifications

  • 24 volt DC 86.4 watt electronically generated 3 phase brushless pump
  • 115mm L x 60mm W x 100mm H
  • Inlet and outlet 25mm
  • Maximum flow 3500 litres per hour, maximum head 5m (4m usable)
  • Amphibious. Can be used outside the water or submerged. The pump must always have water in it.
  • Ceramic bearings for long life.
  • Fresh water only.
  • 12 month warranty

 

A case study

Jane had a special project. She had built an impresive water feature in her garden and needed a pump that could do it justice. She did not want to use a 230 volt powered pump because of the problems of geting power to it. The water feature was on different levels, so she needed a pump that would pump to a reasonable height and still have a good flow of water. The 3P-3500 was the obvious choice. It has a reasonable pumping height and a good flow rate that would not look ridiculous in such a large water feature. Below is Jane's impressive water feature being powered by the sun. Note the amount of water leaving the top pond and running down the water course in the picture.

 

 

 

 

 

 

 

 

 

 

 

HIGH PRESSURE, 1560 litres /hour, 15 metre head

Model 3PH-1560 is a 24 volt pump rated at 86.4 watts with a high head of 15 metres.You can see water in the pictures being pushed as high as the house and that is with an open end. A narrow nozzel will throw it even higher. We drive this pump with a 125 watt 24 volt solar PV panel via a special controller. This pump can be used to pump water from one level to another, perhaps to a header tank. It could also be a spectacular water feature in a lake or a large pond. We have some in the Cook Islands directly driving irrigation drippers. The pump is amphibious, so can be operated inline with a piping system and does not have to be submerged. The pump however must always have water to lubricate the ceramic bearings.

3PH-1560 Specifications

  • 24 volt DC 86.4 watt electronically generated 3 phase brushless pump
  • 100mm L x 60mm W x 75mm H
  • Inlet and outlet 1/2 inch (15mm) BSP thread.
  • Maximum flow1560 litres per hour
  • Maximum head 15m (13m usable)
  • Amphibious. Can be used inline in a pipe or submerged. The pump must always have water in it.
  • Not self priming, so if used amphibiously the water source must be above the pump.
  • Ceramic bearings for long life.
  • Fresh water only
  • 12 month warranty

New 2015 Micro pump full system

micro pump with filter

Micro pump, 3 watt, 12 volts, 8mm outlet (8mm clear tubing is available from places like Mitre 10 Mega, Bunnings etc.)
Price including pump, controller, 5m cable, all connectors and 20 watt PV panel
$155.40 inc GST
.

There is normally 1m of cable on the panel. In the standard configuration there is approx 6m between the panel and the pump, but we can extend the cable if you need more distance between the panel and the pump. The benefits of a panel in full sun far outweigh any losses in the cable (within reason). If you want extra cable select from the shopping cart. Extra cable is $3.20 per metre, postage included if ordered with a pump and panel. When ordering extra cable, enter the number of metres required and click recalculate before going to payments.


Postage and packaging NI $20.00 SI $25.00 additional $6.50 for rural delivery

Please note: To prevent unnecessary delays please make sure you select the RD option if you are at a rural address.

Choose a destination:

New 2016 DC-40 pump full system

DC-40 pump with filter

DC-40 pump, 19.6 watt, 18 volts, 8mm outlet (8mm clear tubing is available from places like Mitre 10 Mega, Bunnings etc.)
Price including pump, filter, 5m cable, all connectors and 40 watt PV panel
$259.40 inc GST
.

There is normally 1m of cable on the panel. In the standard configuration there is approx 6m between the panel and the pump, but we can extend the cable if you need more distance between the panel and the pump. The benefits of a panel in full sun far outweigh any losses in the cable (within reason). If you want extra cable select from the shopping cart. Extra cable is $3.20 per metre, postage included if ordered with a pump and panel. When ordering extra cable, enter the number of metres required and click recalculate before going to payments.


Postage and packaging NI $20.00 SI $25.00 additional $6.50 for rural delivery

Please note: To prevent unnecessary delays please make sure you select the RD option if you are at a rural address.

Choose a destination:

50-02 Pump only

50-02 with filter

Model 50-02 pump, 22 watt, 17.2 volts, 13mm outlet, including inlet filter, 5 m cable
$158.00 inc. GST

(19mm clear tubing to go over the outlet is available from places like Mitre 10 Mega, Bunnings etc . Use a stainless steel hose clip to secure)

Postage and packaging NI $10.00 SI $10.00

Choose a destination:

Complete system

Model 50-02 pump, 22 watt, 17.2 volts, 13mm outlet, including inlet filter, 5m cable with 60 watt PV panel and connectors
$348.00 incl. GST

There is normally 1m of cable on the panel. In the standard configuration there is approx 6m between the panel and the pump, but we can extend the cable if you need more distance between the panel and the pump. The benefits of a panel in full sun far outweigh any losses in the cable (within reason). If you want extra cable select from the shopping cart. Extra cable is $3.20 per metre, postage included if ordered with a pump and panel. When ordering extra cable, enter the number of metres required and click recalculate before going to payments.

Postage and packaging NI $25.00 SI 34.00, additional $6.50 for rural delivery

Please note: To prevent unnecessary delays please make sure you select the RD option if you are at a rural address.

Choose a destination:

DC-50B Complete system
DC-50B solar pump with filter

DC-50 pump, 40 watt, 18 volts, 19mm outlet (19mm clear tubing is available from places like Mitre 10 Mega,Bunnings etc.)
Price including pump, filter, 5m cable, all connectors and 60 watt PV panel
$398.00 inc GST
.

There is normally 1m of cable on the panel. In the standard configuration there is approx 6m between the panel and the pump, but we can extend the cable if you need more distance between the panel and the pump. The benefits of a panel in full sun far outweigh any losses in the cable (within reason). If you want extra cable select from the shopping cart. Extra cable is $3.20 per metre, postage included if ordered with a pump and panel.

When ordering extra cable, enter the number of metres required and click recalculate before going to payments.

Postage and packaging NI $25.00 SI 34.00, additional $6.50 for rural delivery

Please note: To prevent unnecessary delays please make sure you select the RD option if you are at a rural address.

 

Choose a destination:

3P 3500 Complete system

Model 3P 3500 pump, 86.4 watt, 24 volts, 25mm outlet, including inlet filter, 5m cable with 125 watt PV panel and connectors
$796.50 incl. GST

There is normally 2m of cable on the panel. In the standard configuration there is approx 8m between the panel and the pump, but we can extend the cable if you need more distance between the panel and the pump. The benefits of a panel in full sun far outweigh any losses in the cable (within reason). If you want extra cable select from the shopping cart. Extra cable is $4.70 per metre, postage included if ordered with a pump and panel. When ordering extra cable, enter the number of metres required and click recalculate before going to payments.

It does not matter where the connection is between pump and panel "power wise" because the connection is always before the regulator, so the supply cable has a higher voltage on it, thus keeping the current and losses lower. Where extra cable goes is really a matter of convenience. If your panel is going on a roof then it is best to have extra cable on the panel end, so you can disconnect if you need to without having to climb a ladder. If you have a large pond and the pump is out in the middle then you need extra cable on the pump, so the connectors do not end up in the water.


Postage and packaging NI $55.00 SI 65.00 Rural delivery add $13.00

Please note: To prevent unnecessary delays please make sure you select the RD option if you are at a rural address.

Choose a destination:

3PH 1560 Complete system

Model 3PH 1560 pump, 86.4 watt, 24 volts, 1/2 inch BSP outlet, including inlet filter, 5m cable with 125 watt PV panel and connectors
$796.50 incl. GST

There is normally 2m of cable on the panel, In the standard configuration there is approx 8m between the panel and the pump, but we can extend the cable if you need more distance between the panel and the pump. The benefits of a panel in full sun far outweigh any losses in the cable (within reason). If you want extra cable select from the shopping cart. Extra cable is $4.70 per metre, postage included if ordered with a pump and panel. When ordering extra cable, enter the number of metres required and click recalculate before going to payments.

It does not matter where the connection is between pump and panel "power wise" because the connection is always before the regulator, so the supply cable has a higher voltage on it, thus keeping the current and losses lower. Where extra cable goes is really a matter of convenience. If your panel is going on a roof then it is best to have extra cable on the panel end, so you can disconnect if you need to without having to climb a ladder. If you have a large pond and the pump is out in the middle then you need extra cable on the pump, so the connectors do not end up in the water.


Postage and packaging NI $55.00 SI 65.00 Rural delivery add $13.00

Please note: To prevent unnecessary delays please make sure you select the RD option if you are at a rural address.

Choose a destination:
;


Solar PV panels to give you an idea of physical size

(Please note pen on top to show approx. size.)


30 watt PV solar panel

Dimensions in mm

680 x 340 x 30

 


60 watt PV solar panel

Dimensions in mm

770 x 675 x 30

125 watt panel dimensions 1030mm x 990mm x 35mm
 
 
^ TOP OF PAGE