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Submerged water pumps installed to irrigate crops - What are '' B '' used for ?


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 I’m not sure this is the right place to post this , but here goes .

In the area where I live Ive noticed that some land owners who are growing crops have had tube wells with electric submerged pumps installed to irrigate their crops. Several of these water well / pump setups seem to be constructed in a different way that Ive noticed before .

The main tube into the ground is = A
I think C is to add a fertiliser to the pumped water .
I don’t know why B has been added ( Long extra non removable plastic tubes ) .

Any one know why / what those ‘’ B ‘’ Tubes are for ?

 

 

Thanks

 PumpsFinal.jpg

 Old Way.jpg

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16 minutes ago, cjinchiangrai said:

Looks  more like a filter set to me, to keep small tubes from clogging. Multiples in parallel would lower the pressure requirements. 

The vertical larger blue pipes were all glued in place , I was thinking about some sort of filters but generally filters you can unscrew and clean out .

 

 

 Pump2.jpg

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6 minutes ago, Bill Poster said:

The vertical larger blue pipes were all glued in place , I was thinking about some sort of filters but generally filters you can unscrew and clean out .

 

 

Pump2.jpg

True, it may just be to collect chunks of fertilizer until it dissolves. You are right, it is not the pro way to build stuff like this but TIT.

 

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We have then in this area, I did ask once ,if you look irrigation systems most are on flat ground ,if the water is lifted  a few feet it gives the water some more head ,so it can travel farther down the lines ,

At this time farmers are watering cassava ,some fields are 500 meters long most systems are working on drip tapes  they  work on  low pressure,  as Pib's said a basic hydraulic system .

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