Internal filter replacement for PFC-44 pre-filter (set of 6 excluding pre-filter)

Even without hydrocarbon or ester pollution, the PFC-44 pre-filter can sometimes be clogged by too many impurities in the drainage water. The internal components installed in the SPI® prefiltration system is composed of foam and a black diffuser; it must be changed regularly to ensure optimal drainage of the wasterwater.

The PFC-44 pre-filter must be purchased separately.

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Size chart
Women's clothing size
Euro 32/34 36 38 40
USA 0/2 4 6 8
Bust(in) 31-32 33 34 36
Bust(cm) 80.5-82.5 84.5 87 92
Waist(in) 24-25 26 27 29
Waist(cm) 62.5-64.5 66.5 69 74
Hips(in) 34-35 36 37 39
Hips(cm) 87.5-89.5 91.5 94 99
How To Measure Your Bust

With your arms relaxed at your sides, measure around the fullest part of your chest.

How To Measure Your Waist

Measure around the narrowest part of your natural waist, generally around the belly button. To ensure a comfortable fit, keep one finger between the measuring tape and your body.


In order for the PETRO-PIT® filters to maintain sufficient flow, the PFC-44 must be kept as clean as possible. If there are too many impurities in the drainage water, the foam and black mesh in the pre-filter must be replaced. Sold by sets of 6, excluding pre-filter.

Step of follow :

  1. Unscrew the top of the PFC-44 pre-filter,
  2. Remove all internals,
  3. Place the thin grey sheet on the bottom,
  4. Add the polyester disc,
  5. Place the foam,
  6. Add the black mesh over the foam,
  7. Close the top part and tighten strongly.
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SPI® has been an Eastern American manufacturer based in Connecticut for 30 years. Bill Gannon founded SPI® in 1991 to develop a technology for solidifying polluting oils. His experience as Vice President of Liquid Waste Technologies from 1985 to 1991 and the Exxon Valdez disaster in 1989 were key elements in the creation of SPI®.

In the early years, SPI® focused on waste treatment by creating solidifiers for oils (Oil Bond) and for water (WaterBond). Then, in the years that followed, SPI® naturally turned to pollution prevention.

SPI® offers its patented PETRO-PIT®, PETRO-PLUG®, PETRO-PIPE® and PETRO-BARRIER® products to all customers who need to secure their retention equipment with a passive and inexpensive solution, thus allowing good drainage of rainwater without risk of overflow and therefore pollution.

No oil has ever drained from any SPI® filter. SPI® filters comply with American EPA SPCC standards, European and French standards on water treatment in light hydrocarbon separators as well as the water law (hydrocarbon content of water at the filter outlet less than 5 ppm , ICPE compliant). For three decades, thousands of installations have been protected by SPI® products in North America, Europe and Latin America. Its approval with the largest petrochemical industries, power companies and local authorities gives it an obvious strength to innovate in the filtration and solidification of new pollutants (natural esters FR3-COPPER, synthetic esters MIDEL7131) and find the solution for which you need.

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