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The
fertiliser source is isolated from the water system by a
special 3-way solenoid valve so that there is no way the
fertiliser 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 fertiliser
can be injected once the pressure begins to drop even if
the system is attempting to operate. |
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Fertiliser is
injected at only one milliliter per pulse. The miniscule
amount of fertiliser 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 fertiliser 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:
Pedro Pereira at (021) 975 2648 or on his
cell 083 458 3442
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