1. Select the installation location: the water inlet and outlet of the Cheapest Proportional Injector Pump products must be consistent with the water inlet and outlet of the main pipeline.
2. The installation form must be in the form of the Cheapest Proportional Injector Pump products on the top and the liquid suction conduit on the bottom.

3. Fix the proportional pump to the wall or to other facilities.
4. Install the water inlet and outlet of the Cheapest Proportional Injector Pump products in the direction of the water flow to ensure its airtightness.
5. Install a filter screen between the water valve and the inlet of the Cheapest Proportional Injector Pump.
6. When it is necessary to add fertilizer, close the side branch valve of the Cheapest Proportional Injector Pump products , and open the valves on both sides of the proportional pump to add fertilizer.
7. When the proportional pump starts to work, a clicking sound will be heard. At this time, press the air release valve on the top of the Cheapest Proportional Injector Pump products and release it when a small amount of water flows out to ensure the normal operation of the fertilizer feeder.