Pumping water from a jojo tank

Pump size depends on the amount of water Flow you need. You get a unit that fits after Pump it switch Pump on when you open a tap. We have a small Pump conected to 2 x 5000l tanks in back yard. We use the water for garden, washing machine and dishwasher. We do struggle with a bit of gunk in line that is not catched by small filters
 
thehuman said:
Pump size depends on the amount of water Flow you need. You get a unit that fits after Pump it switch Pump on when you open a tap. We have a small Pump conected to 2 x 5000l tanks in back yard. We use the water for garden, washing machine and dishwasher. We do struggle with a bit of gunk in line that is not catched by small filters
Click to expand...

We have a similar setup, borehole with 2 tanks which are used for the garden only.. and a centrifugal pump that pumps the water out into the irrigation system.

You can get one from AFGRI Town&Country or Senwes Village or probably any irrigation store.
 
Last edited:
Irrigation systems will require substantial pressure so you'd typically need the following:
1. high pressure plastic hose (something like HDPE http://irrigationweb.co.za/img/p/58-99-large.jpg) for the connection between the JOJO and the irrigation system; these typically are readily available in 6 or 10Bar rating; depends on the choice of your pressure pump; large irrigation is best run off 10bar; for garden water systems, 6bar is usually ample. Note: If you're supplying this to both the irrigation system and for household needs then keep in mind household systems work on 6 bar; higher than that you'd need pressure reduction valves to avoid geyser, piping and equipment / machine damage. You can readily find this hose plus all the connectors and valves at stores like www.obaro.co.za & www.buco.co.za. Obaro btw also stocks 2 or 3 makes of pressure pumps. Builders warehouse AFAIK only stocks the connectors, valves and not the hose (and the pumps they keep are definitely not suitable for irrigation)
Note: the hose also typically comes in various diameters; I'd recommend 32mm if your needs are for garden and household; go larger (around 50mm) if you're feeding a large irrigation system; basically the larger diameter allows to shift more water volume faster. Household piping is usually 15 or 20mm so 32mm would be ample for 1 house and garden; more than that err on the side of bigger.
2. On the tank end you typically install a non return valve (to avoid pressure blast back on the JOJO).
3. As for the pumps http://www.chinaleogroup.com/1-water-pump/3-5-1.jpg, there are quite a few on the market; and varying qualities. Ito the pump look at local support, warranties and I'd strongly recommend getting a pump with an automatic control unit http://www.raptech.co.za/wp-content/uploads/2012/10/electromagnetic-switch-ps04b-cropped.jpg : which controls the automatic switching on/off of the pump by monitoring pressure release (basically when you open a valve manually or automatic or a tap is opened), and these units also have safety protections against "run dry / no water", over current, surges, etc...

I've used / installed quite a few pumps on our farm for a combination of large irrigation, household use and garden irrigation; the most reliable I've found so far are the Leo range. Here's the local distributors website: http://www.raptech.co.za/leo/

Btw these pumps are able to move a huge volume of water in a small space of time, so you will need quite a bit of JOJO water volume to support extended watering: you might even want to consider an automatic control unit for your borehole pump, to prevent: run dry. If however you are pumping from a dam; a non return is still required and you might want to also consider an inline filter to avoid muck (plant matter and gravel) blocking up the works; these btw are install between the JOJO and the pump (I.e.) the low pressure end before the non return valve. http://www.chinaleogroup.com/a15-accessories.html#
 
Last edited:
You must log in or register to reply here.
Back
Top
Sign up to the MyBroadband newsletter
X