The MIETBP system (very low pressure micro-irrigation)

14 years ago

The prototype of drip irrigation system I have developed in my garden (in southern France) is radically different from all other present-day micro-irrigation systems. Working at a 0.2-bar pressure (2 m of water column), very well controlled by using 2.35-m-high transparent vertical hoses, it needs drip emitters able to deliver a flow proportional to the pressure within the 1.3-to-2.3-m-of-water-column range, with a value worth around 1 or 2 Litre/hour/emitter at a 2-m-of-water-column pressure.

I have succeeded in designing drippers fulfilling such requirements. Those drippers (and the way they work) are described in this page :

http://verylowpressuremicroirrigation.blogspot.com/2008/10/system-mietpb.html

But maybe somebody else (including professionals) will have another idea about how to design this kind of drippers. If that is the case, I would like to know Â

Here is a link that might be useful: Very Low Pressure Micro-Irrigation

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Comments (3)

skyglider
14 years ago
I admit that I didn't thoroughly read everything on your blog spot. From the photo showing the connection to the water faucet, I don't see any backflow prevention device. How do you prevent backflow into the main water line?

Thanks for sharing your system,
Sky
the_french_gardener
Original Author
14 years ago
High, Sky

One of the two water faucets you see on the photo is just used to fill the watering cans. The other one (connected to a yellow hose) feeds water to a stone sink (appearing in the 13th photo). The irrigation system begins with the pressure reducer, which does not allow backflow. This reducer is followed by the electrovalve, acted on or off by a plain electric timer.

Regards.

The French Gardener

Here is a link that might be useful: Very Low Pressure Micro-Irrigation
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skyglider
14 years ago
Hi French Gardener,

I didn't know a pressure reducer would act as a backflow preventer. Only specific types of backflow preventers are allowed in the city I live in.

Thanks,
Sky