Automatic fertilizer and nutrient injector device.

Technical specifications:

– Flow rate: 0.30-0.90m3/hour

– Suction flow rate: 3-37 liters/hour

– Pressure: 0.7-9.5 bar

– Connection thread: male thread 21mm

– Material: High-quality plastic

Summary table of Venturi sizes:

Venturi	Total flow rate	Suction flow rate	Pressure	Note
Venturi size 21mm	290 – 810 l/h	3 – 37 l/h	0.7 – 9.5bar
Venturi size 27mm	650 – 2,420 l/h	9 – 92 l/h	0.7 – 9.5bar
Venturi size 34mm	1.82 – 6.34 m3/h	34 – 279 l/h	0.7 – 9.5bar
Venturi size 49mm	4.31-12.73 m3/h	46 – 680 l/h	0.7 – 9.5bar
Venturi size 60mm	6.8 – 19.12 m3/h	379-1,390 l/h	0.7 – 9.5bar

Highlights:

– Automatic fertilizer injection, saving labor and ensuring safety for users.

– Operates using the available pressure of the irrigation system

– Easy to install, operate, and maintain

– Distributes fertilizers and nutrients evenly to all areas within the irrigation range

– Applicable to all automatic irrigation systems

– Covers large areas in one operation, delivering nutrients directly to plant roots

Working principle:

The fertilizer injector operates based on vacuum suction created by pressure differences in the irrigation system.

Vacuum force is generated when water flows through a constricted point (venturi throat), after which the device gradually expands downstream (see illustration above).

Fertilizers, chemicals, or nutrients are drawn through the suction pipe and mixed into the irrigation water when there is a pressure difference between the upstream and downstream sides of the venturi.