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A requirement of full retention interceptors is that they must have a large enough capacity to prevent pollutants
being flushed through the unit during storm conditions. For larger drainage areas such as parking lots, air ports
and industrial estates this results in a very large full retention petrol interceptor which makes production, installation
and handling more costly. A practical and economical solution to this problem is the BMS By-Pass Interceptor range.

Operation:
Under normal flow conditions the BMS By-Pass Interceptor will separate and retain silt and pollutants such as
oil and petrol prior to discharge. In storm conditions, when periods of peak flow are experienced, it will treat
a certain percentage of the maximum flow whilst at the same time allowing the excess to by-pass the retention chamber
of the unit. As contaminated water enters the first chamber, pollutants float to the surface. Due to the unique
internal design; vortes formation occurs at the by-pass pipe resulting in the pollutants being skimmed off the
surface and become trapped allowing the uncontaminated water to discharge from the interceptor. When storm flow
intensity increases, the vortex pipe floods thus restricting the flow from the first chamber to the retention chamber.
As a result of the increase in water level in the first chamber, hydraulic pressure increases, forcing the majority
of the water through the by-pass weir and into the chamber to discharge.
Manufactured in Longford, Ireland under ISO 9002 Accredited Standards
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is an authorized licensee for BMS Products.
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