Project Guide

Installing a Drip Irrigation System

1
LAY OUT IRRIGATION GRID
Layout irrigation - Drip Irrigation System
  • Lay out a grid with hoses and emitters showing the plants you want to water and how far apart they are. 
  • Each plant will get an emitter, a tiny sprinkler, for its own watering needs, and each emitter will be attached to the water source with a network of drip irrigation lines, 1/4- and 1/8-inch plastic tubing that runs from the main hose to your plants.
  • For continuous coverage, place emitters every 12 inches apart in sandy soil, 18 inches in loamy soil and 24 inches in clay soil.
2
ASSEMBLE THE HOSES
Assemble hoses - Drip Irrigation System
  • Install a backflow preventer valve to the outdoor faucet to keep groundwater from backing up into your drinking water. 
  • Attach a hose adapter to fit the diameter of the system's main line. 
  • Connect the system's main line to the backflow preventer and run it to the garden.
3
INSTALL TEES FOR BRANCH LINES
Install T’s branch lines - Drip Irrigation System
  • Place a tee in the line for each branch line and secure with band clamps. 
  • Cut lengths of line long enough to extend through the garden to each tee.
4
INSTALL EMITTERS AND FEEDER LINES
Install emitters feeder lines - Drip Irrigation System
  • Punch holes in the line for each emitter with emitter tool and place emitters in the desired location. 
  • If plants to be irrigated are more than 1 foot away from the line, cut an appropriate length of 1/8-inch emitter tubing and attach the feeder line to the emitter on the branch line and then attach an emitter to the end of the feeder line. 
  • Plug the ends of the individual lines with caps and secure with band clamps. 
  • Flush the system every four to six months by removing the end caps and turning on the water, allowing it to run until the water flows clear.