--- title: 4 Big Advantages of PermaShield Pipe Over FRP Duct description: This article takes aim at four big advantages of PSP® coated stainless steel duct and how it surpasses FRP duct in quality, safety, cost, and convenience. image: https://blog.cpsgrp.com/hubfs/CPSGrp_Feb2017/_Home/3%20blog%20images/FTI%20(WW%20Wally)/PSP%20coated%20stainless%20steel%20duct.png --- [![Exential_logo_white_ExAb](https://blog.cpsgrp.com/hs-fs/hubfs/Exential_logo_white_ExAb.png?width=133&height=44&name=Exential_logo_white_ExAb.png "Exential_logo_white_ExAb")](https://www.fabtechinc.com/) - [Products](https://www.exentec.net/Products/Process-Exhaust) - [Fume Exhaust Duct](https://www.exentec.net/Products/Process-Exhaust/Fume-Exhaust-Duct) - [Joining Systems](https://www.exentec.net/Products/Process-Exhaust/Joining-Systems) - [Dampers & Blastgates](https://www.exentec.net/Products/Process-Exhaust/Dampers-and-Blastgates) - [Adapters & Accessories](https://www.exentec.net/Products/Process-Exhaust/PSP-Adapters-and-Accessories) - [Literature](https://www.exentec.net/Products/Process-Exhaust/Literature-and-Downloads) - [Blog](https://blog.cpsgrp.com/fabtechinc) # Exential Process Exhaust ## 4 Big Advantages of PermaShield Pipe Over FRP Duct Posted by [Mike Baranski](https://blog.cpsgrp.com/fabtechinc/author/mike-baranski) on Feb 15, 2018 8:37:29 AM Find me on: [LinkedIn](https://www.linkedin.com/in/mike-baranski-b9bbb59/?ppe=1) ### **4 More Reasons to Use PSP® Coated Metal Duct** ![PSP coated stainless steel duct.png](https://blog.cpsgrp.com/hs-fs/hubfs/CPSGrp_Feb2017/_Home/3%20blog%20images/FTI%20(WW%20Wally)/PSP%20coated%20stainless%20steel%20duct.png?width=266&name=PSP%20coated%20stainless%20steel%20duct.png) It's always nice to discover that little advantage or edge-up which makes our lives easier, safer, cheaper, or more productive. It's even better when that advantage is not so little, and when it improves our lives across all categories! This article takes aim at four big advantages of PSP® coated stainless steel duct and how it surpasses FRP duct in quality, safety, cost, and convenience. **1) PSP® IS TRUE CLASS 1 DUCT** When tested using the ASTM E-84 method for flame and smoke generation, PSP® comes up with zero flame spread and a smoke generation rate of less than 20. This means that in the unlikely event of a fire in the duct, fluoropolymer coated stainless steel **will not** spread the flame or contribute to any meaningful smoke generation.   In certain applications, to safely use FRP duct (with a smoke generation rating over 50), the installation of specialized and expensive sprinkler systems is required inside the ductwork itself. FRP duct also requires the application of special resin coatings to reach Class 1 status. These resin coatings are dependent on brominated vinyl ester, which generates high levels of smoke and carbon dioxide when exposed to flame. **[![True class 1 duct.png](https://blog.cpsgrp.com/hs-fs/hubfs/header_class1_fti-2-1.png?width=512&name=header_class1_fti-2-1.png "True class 1 duct.png")](https://www.fabtechinc.com/PDF/FTI_PSP_FireSafe.pdf)** [Read Our Fire Safety Class 1 Duct Case Study Here](https://www.fabtechinc.com/PDF/FTI_PSP_FireSafe.pdf) **2) **PSP®** IS FAST AND EASY TO INSTALL** ![PSP coated stainless steel duct installation on biofiltration bioreactor.png](https://blog.cpsgrp.com/hs-fs/hubfs/CPSGrp_Feb2017/_Home/3%20blog%20images/FTI%20(WW%20Wally)/Permashield%20Pipe%20on%20biofiltration%20bioreactor.png?width=304&name=Permashield%20Pipe%20on%20biofiltration%20bioreactor.png "PSP coated stainless steel duct installation on biofiltration bioreactor.png") Coated metal duct has a clear advantage over fiberglass when it comes to installed labor and cost. PSP**®** uses a bolt-together Van Stone Flange joining system which eliminates the need for odorous resins and bonding agents to secure the jointing of the duct. FRP duct requires grinding, sanding, and the application of special resins and bonding agents which are dependent on optimal weather and temperature conditions. When received on site, installing contractors can unload PermaShield Pipe and immediately begin installation; saving greatly on project timelines. **3) PSP® IS Reusable and Recyclable** Not only is PSP® a fully **reusable** corrosive exhaust system that can be taken down and redeployed within a project site, but the stainless steel substrate product is fully **recyclable** should the system be taken down and not reused for some reason. Additionally, PSP® can be decontaminated by simply wiping the duct surfaces with decontaminating agents; thus preventing the duct itself from being classified as toxic waste or pollutant. FRP does absorb chemicals and will be labeled as toxic waste requiring costly disposal methods and locations.  **4) PSP® IS Zero maintenance** Finally, PSP® carries a simple no lifetime maintenance cost for an installed system. FRP on the other hand requires special ultraviolet and weather protection treatments to the outside surfaces of the duct.  In order to prevent ultraviolet degradation, owners are required to paint the outside surfaces of FRP with a gel coating. This gel coating is needed every 3-5 years depending on where the wastewater treatment plant is located. In areas with a higher frequency of sunny days, FRP systems will require even more treatments over the life of the product. The cost of the gel coat, labor, tooling and scaffolding is typically not budgeted for when installing a new system. These costs fall to the owner as maintenance and can exceed 10’s of thousands of dollars. **PSP® being a stainless steel exhaust system with stainless steel flanges and hardware can handle all weather conditions and UV protection is never required. ** *“PSP, looks as good as the day it was installed!” - operations manager at King County WWTP.* ![161-blog_FTI.png](https://blog.cpsgrp.com/hubfs/161-blog_FTI.png "161-blog_FTI.png") ![Wastewater Treatment Technologies PSP and FRP Duct](https://blog.cpsgrp.com/hs-fs/hubfs/CPSGrp_Feb2017/_Home/3%20blog%20images/FTI%20(WW%20Wally)/Wastewater%20Treatment%20Technologies%20PSP%20and%20FRP%20Duct.png?width=800&name=Wastewater%20Treatment%20Technologies%20PSP%20and%20FRP%20Duct.png) **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](https://blog.cpsgrp.com/hs-fs/hubfs/hub_generated/resized/0ff6d0ee-776c-481c-8e6d-7f1b4127c760.png?width=501&height=262&name=0ff6d0ee-776c-481c-8e6d-7f1b4127c760.png)](https://cta-service-cms2.hubspot.com/ctas/v2/public/cs/c/?cta_guid=f6b82ba1-86e3-4a15-8ec6-9381d09bab27&placement_guid=5c45c1bd-996f-43b1-ad73-773f92bac725&portal_id=2835452&canon=https%3A%2F%2Fblog.cpsgrp.com%2Ffabtechinc%2Fwhy-process-industries-want-psp-fume-exhaust-duct&redirect_url=APefjpH7e_uNS44ait4-FMiUfYVQPhY_Pp0fWf1liHLcM_bT1QtR06-wk-g9VZz8i991WzU7s1D_kMOowAvl8gP-bU9yyiOnQ_cCcGum3Hi5aIIATPCtzI3ZX5ABoOd13kZISRNSxDOtmI9p0j_AbSeqRWN7YTBRjw_p--gvaKInRFb8rCfW17h3gHndSXNImReSaq1NastJk3OqZ2eoePN3cg6gGj87ahodxMyFPDLw8qCTv9LpBkkoQgrjf8YHX4BMw_tvHtSCVMgHCn4zQcCvkOUu7S8SHwVYg3i3OcZOrBgFaVO9lCBzYzIFIetjIJXTYNmv6qUHKmfH5QZi-owazFWGTJ1YHQ&click=f7ac8339-3910-4e25-ba89-3cf54cc7f111&hsutk=e8c12a3007963996d38903b0d99e5216&utm_referrer=https%3A%2F%2Fblog.cpsgrp.com%2Ffabtechinc&pageId=5689224858&__hstc=120297175.e8c12a3007963996d38903b0d99e5216.1490876416085.1532460695913.1532697149952.969&__hssc=120297175.434.1532697149952&__hsfp=294636370) OR [Read More About PermaShield Fluoropolymer Coated Fume Exhaust Duct Here](https://www.fabtechinc.com/PS_PSP.php?__hstc=120297175.e8c12a3007963996d38903b0d99e5216.1490876416085.1532460695913.1532697149952.969&__hssc=120297175.434.1532697149952&__hsfp=294636370) Topics: [frp duct](https://blog.cpsgrp.com/fabtechinc/topic/frp-duct), [wastewater treatment plant odor control](https://blog.cpsgrp.com/fabtechinc/topic/wastewater-treatment-plant-odor-control) [![New call-to-action](https://no-cache.hubspot.com/cta/default/2835452/c75afcc6-2141-4c77-8090-7ea8b7ff51a7.png)](https://cta-redirect.hubspot.com/cta/redirect/2835452/c75afcc6-2141-4c77-8090-7ea8b7ff51a7) ## Don't Lose Your Competitive Advantage ## Follow Our Blog To Keep Pace With The Latest... - Industry Standards - Thought Leaders - Ideas and Innovations - Products and Services - Guides and Practices ### Subscribe to Email Updates ### Recent Posts ### Posts by Topic - [wastewater treatment plant odor control (20)](https://blog.cpsgrp.com/fabtechinc/topic/wastewater-treatment-plant-odor-control) - [fume exhaust duct (16)](https://blog.cpsgrp.com/fabtechinc/topic/fume-exhaust-duct) - [frp duct (15)](https://blog.cpsgrp.com/fabtechinc/topic/frp-duct) - [lab design (5)](https://blog.cpsgrp.com/fabtechinc/topic/lab-design) - [biosolids management (3)](https://blog.cpsgrp.com/fabtechinc/topic/biosolids-management) - [lab safety (3)](https://blog.cpsgrp.com/fabtechinc/topic/lab-safety) - [research lab safety (3)](https://blog.cpsgrp.com/fabtechinc/topic/research-lab-safety) - [vent duct (3)](https://blog.cpsgrp.com/fabtechinc/topic/vent-duct) - [acid fumes (2)](https://blog.cpsgrp.com/fabtechinc/topic/acid-fumes) - [class 1 duct (2)](https://blog.cpsgrp.com/fabtechinc/topic/class-1-duct) - [duct installation (2)](https://blog.cpsgrp.com/fabtechinc/topic/duct-installation) - [fluoropolymer coating (2)](https://blog.cpsgrp.com/fabtechinc/topic/fluoropolymer-coating) - [vent pipe installation (2)](https://blog.cpsgrp.com/fabtechinc/topic/vent-pipe-installation) - [wastewater treatment technologies (2)](https://blog.cpsgrp.com/fabtechinc/topic/wastewater-treatment-technologies) - [PSP-EZ duct installation (1)](https://blog.cpsgrp.com/fabtechinc/topic/psp-ez-duct-installation) - [Permashield Pipe (1)](https://blog.cpsgrp.com/fabtechinc/topic/permashield-pipe) - [Solar Cell Manufacturing (1)](https://blog.cpsgrp.com/fabtechinc/topic/solar-cell-manufacturing) - [acid exhaust (1)](https://blog.cpsgrp.com/fabtechinc/topic/acid-exhaust) - [astm e-84 (1)](https://blog.cpsgrp.com/fabtechinc/topic/astm-e-84) - [biofiltration (1)](https://blog.cpsgrp.com/fabtechinc/topic/biofiltration) - [carbon adsorption (1)](https://blog.cpsgrp.com/fabtechinc/topic/carbon-adsorption) - [careers (1)](https://blog.cpsgrp.com/fabtechinc/topic/careers) - [class 1 fire rating (1)](https://blog.cpsgrp.com/fabtechinc/topic/class-1-fire-rating) - [coated stainless steel (1)](https://blog.cpsgrp.com/fabtechinc/topic/coated-stainless-steel) - [ductless fume hoods (1)](https://blog.cpsgrp.com/fabtechinc/topic/ductless-fume-hoods) - [facility design (1)](https://blog.cpsgrp.com/fabtechinc/topic/facility-design) - [fume exhaust (1)](https://blog.cpsgrp.com/fabtechinc/topic/fume-exhaust) - [grit chamber (1)](https://blog.cpsgrp.com/fabtechinc/topic/grit-chamber) - [headworks (1)](https://blog.cpsgrp.com/fabtechinc/topic/headworks) - [hot tap installation (1)](https://blog.cpsgrp.com/fabtechinc/topic/hot-tap-installation) - [industrial facility safety (1)](https://blog.cpsgrp.com/fabtechinc/topic/industrial-facility-safety) - [lab air (1)](https://blog.cpsgrp.com/fabtechinc/topic/lab-air) - [laboratory ventilation (1)](https://blog.cpsgrp.com/fabtechinc/topic/laboratory-ventilation) - [lift station (1)](https://blog.cpsgrp.com/fabtechinc/topic/lift-station) - [national labs (1)](https://blog.cpsgrp.com/fabtechinc/topic/national-labs) - [odor control systems (1)](https://blog.cpsgrp.com/fabtechinc/topic/odor-control-systems) - [odor control technology (1)](https://blog.cpsgrp.com/fabtechinc/topic/odor-control-technology) - [research lab (1)](https://blog.cpsgrp.com/fabtechinc/topic/research-lab) - [saddle tap (1)](https://blog.cpsgrp.com/fabtechinc/topic/saddle-tap) - [semiconductor manufacturing (1)](https://blog.cpsgrp.com/fabtechinc/topic/semiconductor-manufacturing) - [sludge dewatering (1)](https://blog.cpsgrp.com/fabtechinc/topic/sludge-dewatering) - [solid scavengers (1)](https://blog.cpsgrp.com/fabtechinc/topic/solid-scavengers) - [vent pipe (1)](https://blog.cpsgrp.com/fabtechinc/topic/vent-pipe) - [wastewater odor control (1)](https://blog.cpsgrp.com/fabtechinc/topic/wastewater-odor-control) - [wastewater treatment (1)](https://blog.cpsgrp.com/fabtechinc/topic/wastewater-treatment) - [wastewater treatment privatization (1)](https://blog.cpsgrp.com/fabtechinc/topic/wastewater-treatment-privatization) - [wet scrubber systems (1)](https://blog.cpsgrp.com/fabtechinc/topic/wet-scrubber-systems) see all - [Home](https://www.exentec.net/) - [About](https://www.exentec.net/About-Us) - [Contact](https://www.exentec.net/Contact) © 2026 Exentec ```json { "@context" : "https://schema.org", "@type" : "BlogPosting", "author" : { "@type" : "Person", "name" : "Mike Baranski", "url" : "https://blog.cpsgrp.com/fabtechinc/author/mike-baranski" }, "dateModified" : "2020-11-03T19:21:34.654Z", "datePublished" : "2018-02-15T13:37:29.000Z", "headline" : "4 Big Advantages of PermaShield Pipe Over FRP Duct", "image" : [ "https://blog.cpsgrp.com/hubfs/CPSGrp_Feb2017/_Home/3%20blog%20images/FTI%20(WW%20Wally)/PSP%20coated%20stainless%20steel%20duct.png" ], "mainEntityOfPage" : { "@id" : "https://blog.cpsgrp.com/fabtechinc/four-advantages-of-stainless-steel-duct-over-frp-duct", "@type" : "WebPage" }, "publisher" : { "@type" : "Organization", "logo" : { "@type" : "ImageObject", "url" : "https://blog.cpsgrp.com/hubfs/email_header_fti.png" }, "name" : "Critical Process Systems Group" } } ```