When water flows through a pipe that increases from big to small and then from small to big (Venturi throat), the water flows through the narrow part, the flow rate increases and the pressure drops. When the throat pipe diameter is small to a certain extent, the water flow in the pipe will form a negative pressure. The small opening on the side wall of the throat can suck the fertilizer solution from an open fertilizer tank through a small diameter tube.
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Fertilizer rate regulator. A total of five levels can be adjusted to meet your daily needs |
Venturi fertilizer applicator |
Filter |
High quality straws |