G3 / 4 fertilizer fertilizer and filter straws kit Working principle of the fertilizer: When the water flow passes through a pipe formed by a large crescendo followed by a small crescendo (Venturi pass), the water flow increases through the narrow part and the pressure decreases; When the diameter of the throat is so small that the water inside the tube forms negative pressure, a small opening on the side wall of the throat can suck fertilizer solution from a fertilizer reservoir opened through a thin tube. 1, the Venturi type infuser is installed in parallel with the water supply control valve at the inlet of the filling area of the system. irrigation, when using the control valve will be small, forming the pressure difference before and after the control valve, can make your Fertilizer dissolved In the water sucked into the Venturi type infuser, then flow out into the feed water line. 2, using the vacuum suction generated by the water flow through the Venturi, the fertilizer solution is evenly drawn into the system of open fertilizer bucket piping for fertilizing. Make your operation more convenient and simple. If the fertilizer concentration is stable, there is no need to add power, saving time and resources! 4, product application scope: fertilization of small areas such as large greenhouse shed.