The cheap Proportional Injector Pump are powered by flowing pressurized water, with little water pressure loss, and can fertilize without the help of any other power facilities. The part of the cheap Proportional Injector Pump that absorbs the additive and the whole body of the fertilizer pump are combined by a piston rod connected to the hydraulic power.

The cheap Proportional Injector Pump mainly uses the water power in the proportional pump as the engine, drives the piston and connecting rod in the proportional pump, and directly inhales the liquid additive and dissolves it in the water flow. This device is a piston rod equipped with an anti-reverse flow, which can be rotated in a cylinder, so that the cheap Proportional Injector Pump can press the water out, and at the same time, the additives in the bottom container can be evenly inhaled into the water flow through the pipeline.
The Proportional Injector Pump achieves the effect of adding the additive to the flowing water uniformly and continuously by repeating this up and down movement. In the cheap Proportional Injector Pump, after the concentrated liquid is fully mixed with water, the water pressure sends the diluted mixed liquid to the downstream pipe network, thus completing the fertilization.