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Pre-filtration box for Petro-PLUG View larger

Pre-filtration box for Petro-PLUG

340,00 € (tax excl.)

Pre Filtration Box (THF9PP) recommended to be placed upstream of the filtration systems Petro-PLUG® to ovoid filters active media to be blocked by waters impurities (mud, sand, leaves, etc). The Top Hat Filter THF9PP internals must be cleaned egularly to maintain the efficiency of the Petro-PLUG®.  

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The pre-filtration box THF9PP must installed above the filters Petro-PLUG® to limit the risk of sealing of its active media by impurities contained in the water (mud, dust, sand, leaves, etc).

Available in several sizes, this pre filtration box is mainly designed for civil engineering applications (retention tanks, concrete pits, compressors, generators ...).


This pre-filtration box THF9PP consists in an aluminum cage, fulfilled with foams and geotextiles that filter and trap impurities in the water.

The THF9PP is designed to equip only one filter.

For another configuration, other models of pre-filtration cages are available : please consult us.

Installation & maintenance

The pre-filtration cage is installed on the top of the pit or retention basin, upstream of the filter's hole drilled in the retention volume .

It is advised to clean this equipment at least 1 time / year  with clear water.

In difficult conditions (tree leaves, dust, sand or anything else that can block the pre-filtration system), maintenance should be performed more regularly.

Without major incident, pre filtration interns floss must be replaced every 3 years.

Delivered without screws and fixing accessories (indeed, each instalation site is different)


The kit includes:

  • 1 metalic pre-filtration cage
  • 1 black mesh reinforced sheet
  • 1 white foam floss.

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