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Fab-Tech Blog

Fab-Tech Inc.

How Fluoropolymer Coating Improves Stainless Steel Duct

Posted by Mike Baranski on Mar 16, 2018 10:30:24 AM
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10 Benefits of Fluoropolymer Coating on Stainless Steel Duct

Corrosive fume exhaust systems and vent duct products should be just that... corrosion resistant. For decades, wastewater treatment facility owners (and engineers) have faced a major pain point with plastic and FRP systems that degrade and need regular repair or replacement.

Compounding this pain is the fact that many plastic and FRP exhaust duct products are highly combustible. In the event of a fire, or gaseous ignition, such systems will likely be rendered useless if not completely destroyed. In short, wastewater facilities with these types of systems face the pain of higher fire insurance premiums; and those that self-insure face catastrophic losses.

As if that's not enough, wastewater fume exhaust systems are largely installed and operated outside of a climate controlled facility. This leaves plastic and FRP products vulnerable to harsh environmental conditions ranging from intense ultraviolet rays to extreme weather and temperature fluctuations.

Such conditions can lead to problematic installations and persistent material degradation.

Thankfully, the entire game changed when fluoropolymer coating was first applied to stainless steel duct for corrosive fume applications.

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With this technology, PermaShield (PSP®) stainless steel duct became the standard bearer for longevity and a superior alternative to plastic and FRP duct systems.

Because the exterior surface of stainless steel duct requires no protective coatings, maintenance over the life of the product is virtually non-existent.

And since PSP®'s internal fluoropolymer coating does not absorb corrosive fume compounds, the system will not corrode and will not require costly disposal in an end-of-use scenario.

In fact, fluoropoloymer coated stainless steel duct can be fully reused or reinstalled at another project location, or recycled in an end-of-use scenario. This dramatically lowers disposal costs and potential impacts to the environment.

With respect to fire safety, PSP®'s zero flame spread rating and smoke generation of less than 20 means that it will not burn, collapse, leak, or become rendered useless in the event of a facility fire or gaseous ignition.

Additional Benefits of Fluoropolymer Coating

Beyond corrosion resistance and fire safety, there are 8 additional benefits that stem from the application of fluoropolymer coating to stainless steel fume exhaust duct. These include:

  1. High mechanical durability with excellent cut through and abrasion resistance
  2. Low cold flow
  3. High tensile strength and good elongation properties
  4. Excellent impact resistance at room temperature and down into the cryogenic
  5. Dimensional stability
  6. Continuous use to 300°F in most applications
  7. Excellent release properties
  8. Very smooth surface

If you would like more information about PSP® corrosive fume vent pipe and duct, please feel free to download our general information guide below:

Corrosive Fume and Odor Control Exhaust Duct Information Guide


Read More About PermaShield Fluoropolymer Coated Fume Exhaust Duct Here

Topics: fluoropolymer coating, coated stainless steel