Venturi-driven Fertilizer Injector Kit for greenhouse irrigation. Designed to inject fertilizer or chemicals into drip and sprinkler systems using the pressure of your main irrigation line—no external power required, and ready to streamline small-scale fertilization in greenhouses.

• Material: engineering plastic (POM) with excellent chemical resistance to a wide range of fertilizers and chemicals.
• Design: highly efficient, compact differential-pressure injection device that delivers precise dosing in a space-saving package.
• Connection options: available with 3/4" or 1/2" BSP inlet/outlet threads (inlet/outlet thread: 3/4" or 1/2").
• Flow range: 0.29-0.81 m3/h; Work pressure: 0.7-9.5 bar.
• Self-priming capability: 3-37 L/h, enabling reliable fertilizer uptake even with moderate system pressure variations.
• Color: Random
• Size: See photos
• Package contents: 1 PC 1/2 inch to 3/4 inch Venturi tube, 1 PC Irrigation Water Hose, 1 PC Flow Control Switch, 1 PC Metal Mesh Filter.

Working principle

1. The Venturi-type injector is installed in parallel with the water supply control valve. The pressure difference before and after the valve creates suction that draws fertilizer into the Venturi from the reservoir into the water stream.
2. Water flowing through the Venturi generates vacuum, continuously drawing the fertilizer solution into the piping system for uniform mixing and distribution.
3. When fertilization concentration remains stable, the system operates without additional power, helping to save water, time, and resources.

Applications and suitability

• Ideal for greenhouse fertilization and small-area irrigation where a simple, economical, and low-maintenance solution is desired.
• Compatible with drip and sprinkler irrigation layouts, making it easy to dose fertilizers or chemicals directly into the main irrigation line.

Notes

• Manual measurements may have a 1-2 mm tolerance.
• Color may vary between units due to production variation.