Venturi Tubes

38mm dark green spray applicators used to apply liquid fertilisers or foliar sprays.

These tubes suck up the liquid fertiliser or foliar sprays when the water from a hose travels past the bottle. 

How does the venturi effect work?  When fluid flowing through a tube is forced through a narrow section, a velocity increase is the result.  This is similar to how water’s velocity increase when you place your thumb over the end of a garden hose to create a high-pressure spray.



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