DuraTop® und DuraFlow – Inert Covering Material and Pressure Drop-Reducer

DuraTop® and DuraFlow are used for the covering of catalyst and catalyst carriers (Duranit® inert balls) and are applied to the upper ball layers. In addition, it is possible to apply the two Pressure Drop-Reducer at different levels of the catalyst support bed or even to replace the upper spherical layers in an energy-saving manner. DuraTop® and DuraFlow are of course available in different sizes. 

In addition these products offer the following advantages

  • Good pre-distribution of liquid and gaseous media
  • Reduction of pressure drop
  • Increased reduction of any particle impurities of the media before they reach the catalyst bed

Physical parameters: DuraTop®

Description Nominal size Spec. weight* [kg/m³] Spec. surface [m²/m³] Free volume [%]
VFF-DuraTop®
1/2" ca. 1000 640 ca. 55
3/4" ca. 850 400 ca. 65
1" ca. 850 300 ca. 65
Description Nominal size Spec. weight* [kg/m³] Spec. surface [m²/m³] Free volume [%]
DuraFlow
1/2" ca. 1200 650 45...50
5/8" ca. 1150 400 47...53
Other sizes on request

Subject to technical modifications. All details serve for preliminary information purposes only. Claims cannot be derived therefrom. Specification sheets are available on request.
*The usual, permitted tolerances for ceramic products apply.

Your VFF product specialist will be pleased to advise you of the benefits of DuraTop® and DuraFlow in your system.

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