Liquid fertilizer injector system for lawn sprinkler systems and irrigation systems

A method for operating a liquid fertilizer injector system using liquid fertilizer with water and a water source, comprising the steps of:

• providing a mixing tank having an inlet line;
• providing a feeding chamber attached to the mixing tank for inserting a predetermined amount of liquid fertilizer into the mixing tank;
• receiving a supply of water from a water source in the mixing tank;
• mixing the supply of water with the predetermined amount of liquid fertilizer in the mixing tank;
• controlling the flow of the mixed liquid fertilizer and water from the mixing tank;
• distributing the mixed liquid fertilizer and water;
• and
• maintaining the liquid fertilizer in the feeding chamber as needed.

A liquid fertilizer injector system attached to a source of water by a water source line, the system comprising:

• an inlet line adapted for attachment to a water source line;
• a holding tank connected to said inlet line;
• a collapsible impermeable bag disposed in said holding tank;
• a predetermined amount of liquid fertilizer disposed within said impermeable bag;
• an outlet line connected between said bag and the water source line downstream from said input line;
• a port position indicator valve disposed in said outlet line for incrementally controlling the flow of liquid fertilizer from said outlet line back to the water source line;
• and
• a drainage valve to drain and release any input water in said holding tank;
• wherein pressure from water entering said tank from the water source line compresses said bag to force said liquid fertilizer through said output line and into water flowing in the water source line for subsequent dispersion.

A liquid fertilizer injector system attached to a water source line, comprising:

• an inlet line adapted for connection to a water source line;
• a mixing tank connected to said inlet line, said inlet line providing a predetermined amount of water from the water supply line to said mixing tank;
• a feeding chamber connected to said tank said feeding chamber for adding liquid fertilizer to said mixing tank;
• an agitator disposed in said mixing tank, said agitator mixing the liquid fertilizer with the predetermined amount of water from the inlet line;
• an outlet line connected to said mixing tank and adapted for connection to the water source line downstream from said input line;
• and
• a port position indicator valve disposed in said outlet line for incrementally controlling the flow of the mix of water and said liquid fertilizer in the outlet line.