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Call the utility company and have them mark the location of buried cables in the yard. Then calculate the size of the yard. Determine the sprinkler's coverage as well as measuring the water pressure. Make a diagram on paper and plot the location of the sprinkler heads. Mark the yard with flags where the sprinklers will go.
Water enters the sprinkler system from the main water supply. The anti-siphon valve serves to keep brackish water, lawn chemicals and fertilizers from backing up into the main water supply. Install the anti-siphon valve.
Dig a trench 6" to 8" deep with sides sloping at a 45-degree angle. When digging, place sod to one side and soil to other to make filling and patching the trench easier. Rent a trenching device, also called a vibratory plow, to make this stage go much faster.
Assemble the sprinkler pipes according to the manufacturer’s requirements. When gluing sections together, be sure to apply the adhesive thinly and smoothly. Use "tee" connectors for pipes running off the main line. Attach the risers, the portion of the tubing that rises up to ground level.
Select the appropriate sprinkler heads based on the irrigation needs of the lawn and landscape. Before attaching sprinkler heads, flush water through system to clean out any debris. Install the sprinkler heads onto the risers. Level the sprinkler heads with level of sod. Fill in trenches and holes with dirt and sod.