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The
fertilizer source is isolated from the water system
by a special 3-way solenoid valve so that there is no
way the fertilizer will siphon out of the container
into the water system in the event of a backflow event
and backflow preventer failure. This has been a problem
with prior attempts to deliver the benefits of fertigation
to the residential market |
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The
FertiGator cannot pulse if there is no water pressure,
such as when there is a backflow event. No fertilizer
can be injected once the pressure begins to drop even
if the system is attempting to operate. |
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Fertilizer
is injected at only one milliliter per pulse. The miniscule
amount of fertilizer in the line at any given time should
not pose a significant health hazard to anyone. This
risk is approximately the same as a puddle above a sprinkler
head containing recently applied chemical. |
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Even
if there is pressure in a stagnant situation so that
the FertiGator will pulse, the FertiGator will actually
reduce the pressure in the line preventing a backflow
across a PVB backflow preventer. |
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If
our valves should fail whether mechanically or due to
an electrical failure, they will fail closed so that
no fertilizer can enter the sprinkler system. |
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It
is very important to use the proper backflow preventer.
We believe that it is unlikely, however, that there
will be a contamination of any significance from the
FertiGator if the wrong backflow preventer is used.
Which type is required is determined by State and local
law, and vary from the high hazard reduced pressure
backflow preventer (RP) or pressure vacuum breaker backflow
preventer (PVB), to the low hazard double check valve
assemblies (DC) or anti-siphon valves (ASV).
We have not reviewed the laws of all of the States and
municipalities and make no representation as to which
backflow preventer is required in any particular area.
We are in the process of educating the governmental
authorities about the features and benefits of the FertiGator.
If you have any questions from local officials, please
have them call Ned Lips at 1-877-337-8442 ext. 6 for
more information. |
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