All sprinkler systems require two major components. One is
a viable water supply, and the other is an electrical
source to power the timer mechanism and the remote valves.
Since there wouldn't ordinarily be enough water to cover
the entire lawn area at once, the lawn is sectioned off
into "zones". Each zone is coupled to a remote electric
valve, which in turn is connected to the timer. The timer
is programmable, allowing you to set each separate zone to
run for a predetermined length of time.
The water supply is tapped, generally in the lawn where the
water meter is located, and piped to a valve box containing
any number of valves. These valves are connected together
by a manifold system. From each valve a pipe installed that
connects a series of sprinkler heads on that zone. The
number of heads that can be run on one zone is determined
by the amount of water that is available.
The timer is connected to the series of valves by a multi
strand wire. By connecting the timer to the valves you have
the ability to electronically control the remote valves by
writing programs into the timer, or to manually run
individual zones anytime.
Each system contains what is called a "backflow device".
The purpose of this is to prevent water from the sprinkler
system from getting into the potable water supply.
Different counties call for different types of backflow
devices, but in every case, there should be one installed
on your system.
Special consideration should be given to systems operated
from water wells. On a city water system, there is a
constant pressure and flow. Since these numbers are given,
a system on city water is relatively simple to set up.
Water wells, however, can deliver greatly different flows
and pressure as the water is used.
Those that are located on the lake can pump from there to
water you lawn. Generally these are a little more costly to
install as we will have to run power out to a pump that
will be installed to draw water from the lake and send it
to the valves. We have found that the lawn enjoys the lake
water just as much as rain water as all of the nutrients
and minerals have not been filtered out.