How to Install an In-Ground Sprinkler - Page 2

  • Step 4 : Make pipe connections

    Make pipe connections

    Use fine-grit emery cloth to clean the ends of pipe and the fitting sockets and apply plastic pipe primer to both surfaces. Apply a thick coat of solvent/cement to mating surfaces and twist the parts together one quarter turn. Set piping in the trench as you assemble it and avoid disturbing the connection for at least a minute.

    Make pipe connections

    Use stainless steel hose clamps to join flexible plastic pipe. Place the hose clamp on the pipe, then push it on the barbed end of the fitting. Tighten the clamp with a screwdriver.

  • Step 5 : Install control valves and sprinkler heads

     Install control valves and sprinkler heads  Install control valves and sprinkler heads  Install control valves and sprinkler heads

    Extend the piping from each loop in your system to the same point and build the manifold that will distribute water from the service line (or hose) through a series of control valves (one for each irrigation loop). Follow the manufacturer's directions for installing the sprinkler heads. If you live in a colder climate, give some thought to how you will drain the system to prevent freeze damage in the winter. Many systems have special sprinkler heads for the end of the loop that automatically drain the pipes.

  • Step 6 : Connect to a hose bib (spigot)

    If you are connecting to a hose, install a check valve or other back-flow prevention device on the pipe leading to the manifold. In turn, install another short length of pipe and a pipe-to-hose adapter to a garden hose. If you have a large system, most manufacturers recommend that you tap into the existing cold water system and permanently connect the sprinklers to the house water supply.

    If you plan to connect your system to the hose bib and use an inline water timer to automate your system, use snap-on connectors or a Y-valve at the hose bib so you can also use the outlet for other watering needs.

  • Step 7 : Adjust system

    Turn on the water and open the control valve to one loop at a time and adjust the system according to the manufacturer's instructions. When you are sure the system is operating properly, backfill the trench. Replace the sod or reseed, if needed.

  • Step 8 : Program the timer

     Program the timer

    Follow the control manufacturer's instructions for programming your timer. Typically the best time to water is in the early morning hours when the wind is low and the sun is not yet shining.

    Illlustrations courtesy of Toro Company

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