Shutter sets are elements of reliable protection, against backwater
accidents that can be presented in sewer systems and open channels
whose diameters are 10" or more, considering the following
circumstances of risk.
Any open canal or pipe which is destined to conducting liquids
that flow on their bottom are susceptible to suffering obstructions,
saturations or inversions of the normal flow caused by unforeseen
surges in their final sewage discharges. Whatever the situation
or the cause of this phenomenon may be, the result will be the same:
the contents will overflow through the openings to the exterior
of the system or out of the ditches where it should flow.
Since this has to do with unforeseen situations, it is indispensable
to provide protection at the points where the drainage or sewage
systems are exposed to this risk. This protection may be automatic
or autonomous so that it will operate without external help when
the circumstances require blocking a backflow. Likewise, since these
ducts are generally not pressurized, the elements, which are destined
for this protection, must not restrict the easy flow of the drainage.
The SHUTTER SETS fully comply with this requirement; they constantly
remain open. This guarantees that the normal flow will not be restricted
in the least. They close automatically when there is a backflow.
How it operates
The same flood that causes the backflow, activates SHUTTER
SETS. This way, when the normal level rises, the lateral
floats of the SHUTTER SETS move back lowering the shutter
diaphragm to its shut position. Once the emergency situation
is over, the floats fall back allowing the normal flow of
SHUTTER SETS are available in any diameter greater than
10" (250 millimeters) and at the user's request, they
may be provided with any type of coupling which is suitable
for the different commercial pipeline systems.