The continued emphasis on water control and conservation is contributing to the downsizing of irrigation emission devices, like drip or microspray irrigation, which provide pinpoint applications at very low rates.
A cross connection
is defined as an unprotected
point between a drinking
water source and
any source of nonpotable
water. If a
is not protected, it is
possible for the flow of
water to reverse its
For potable water, life is a series of one-way streets. Safe drinking
water depends on all “traffic” within a water system to move in the
direction it’s supposed to. Fresh water flows one way. It isn’t supposed
to turn around and travel in the other direction.
If you’ve never worked on irrigation before, upon close inspection an irrigation system might appear to be a jumble of wires running here, there and everywhere, valves that work in a way you don’t understand, and pipe running underground.
As manual irrigation control has been replaced by automatic control, communication between the automatic control device and the valves has become critical to the integrity of any automatic system. Like the nerves that carry impulses between neurons and the brain. If the message is corrupted between the two, so will be the resulting response.
Perhaps the most overlooked problem with landscape irrigation system performance is pressure. A healthy balance of pressure is good for the performance and longevity of your irrigation system, and thus the aesthetics of your landscape. Keeping some fundamental hydraulics in mind, minimizing the impacts of too much or too little pressure in an irrigation system is simple, quick and effective.
The conclusion of World War II marked the introduction of new technologies to private industry that were developed for the war effort. One that would certainly revolutionize the residential/commercial marker of the irrigation industry was thermoplastic pipe.
LET’S ASSUME THAT YOUR COMPANY
gets a contract with a homeowner
whose property encompasses
the size of two football fields,
and, in addition to regular lawn
maintenance, that homeowner
wants you to install an irrigation
system. You and your employees
are all very happy—after all,
this is a big job.
The irrigation industry was
completely different than
what it is now when David D.
Pagano designed his first system
in 1957. Smart controllers were
years away from being invented,
as were sensing devices. If you
asked anyone in the industry
what a rotary nozzle was, most
likely your answer would have
been a silent, quizzical look from
someone wondering what on
earth you were talking about.
Drip Irrigation - Low Flow
THE SUMMERS IN SOUTHERN CALIFORNIA ARE NO JOKE. The sun pounds the landscape like a hammer, and it’s not unusual for temperatures to reach the ’90s before noon. But the summer of 1999 was particularly brutal.