DualGuard® I Polishing Septa

DualGuard I elements are engineered for systems that require a uniform precoat on the outer surface of the septa.

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Graver Technologies DualGuard I elements are engineered for systems that require a uniform precoat on the outer surface of the septa, providing an effective removal of iron oxide particles while still allowing for an effective backwash. The all polypropylene constructed element has two distinct zones. The outer zone is a multi-string wound surface ideal for precoating in either a thin or a full layer resin precoat and the inner zone is a pleated polypropylene with a fixed pore media. The inner pleated filter media is available in a variety of micron grades to meet specific requirements of the condensate system. The element is available in most end cap connections.

  • The optimum precoat surface allows for the distribution and sustainability of an evenly thin layer precoat for optimum performance
  • Precoatable with a full or thin layer of powdered resin
  • Available in various outside diameters
  • Fixed pore construction eliminates dirt unloading as differential pressure increases
  • High surface area of pleated media
  • Removal efficiency rated
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Frequently asked questions

How to remove heavy metals from water and wastewater?
Many MetSorb® adsorbents will remove heavy metals from water and wastewater. Please view our product pages for more information.
Are heavy metals in water? Do they pose a threat to human health?
The USEPA issued and regularly reviews/updates the National Primary Drinking Water Regulations (NPDWR).
How can I remove lead from water?
Many MetSorb® adsorbents will remove lead and other heavy metals from water. Please view our product pages for more information.
How much uranium is safe in drinking water?
The USEPA has issued and regularly reviews/updates the National Primary Drinking Water Regulations (NPDWR).
Why do MetSorb® adsorbents sometimes have a bad smell and how do we get rid of this odor?
MetSorb® adsorbents are made from metal oxides and rarely have any noticeable smell. They can sometimes concentrate bacteria (specifically sulfur reducing) that may be present in the drinking water well source. While this type of bacteria is naturally found in many well sources and are considered harmless, the resulting “rotten egg” smell can be unpleasant. In order to remove the bacteria from the MetSorb® media bed, we recommend performing a 25-50 ppm chlorine shock for 12-24 hours. The system should then be rinsed with fresh water until no residual chlorine odor is noted. If bacteria count in the well water is high, this chlorine shock of the MetSorb® media may be required 2 or 3 times per year.
How can uranium be removed from well water?
One way uranium can be removed is through adsorption. MetSorb® HMRG has a selective affinity for uranium.

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