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Draw the main line from the location where your plan to install your control valves, time (if automatically operated), and backflow preventer. Draw branch lines from the main line to each head. You can route a branch line to more than one head if you use a 3â4 inch (1.9 cm) pipe, but two should be the limit.
Select Sprinkler Heads. There are three basic types of sprinklers for residential use: large area rotors, rotating stream spray sprinklers, and. small area fixed spray sprinklers. Large area rotors and. rotating stream spray sprinklers should never be installed. on the same zone as small area fixed spray sprinklers.