Step 4 : 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.
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
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
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
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
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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