Pure Guard SS is a fluoropolymer lined, welded stainless steel exhaust duct that has been tested and approved by Factory Mutual for corrosive fume and smoke exhaust without sprinklers. Pure Guard SS is also approved by Factory Mutual for installation in Clean Rooms

Pure Guard SS is without doubt the best product of its kind on the market. Key advantages include the following:

Factory Mutual Approvals -

• Factory Mutual (FM) Approved to 4922 Protocol for use as a fume and smoke exhaust duct without internal sprinklers.
• Meets Factory Mutual(FM) 4910 protocol for use in clean rooms.
• Factory Mutual (FM) Approved for unlimited vertical riser height.
• Approved with flange on clamp joints.
• Approved from 4" to 60".

Performance Advantages -

• Pure Guard SS has the thickest corrosion resistant fluoropolymer liner by far of any FM Approved duct system (up to 60% thicker).
• Pure Guard SS did not ignite in FM 4910 testing.
• Pure Guard SS in testing at FM had a much lower temperature rise than Teflon ETFE lined duct.
• Pure Guard SS is available in standard 10 ft (3m) lengths, eliminating up to 20% of the handling and flange leak paths of competitive lined duct.
• Pure Guard SS ECTFE liner system is thicker, tougher, more combustion resistant than its ETFE competition.

Pure Guard SS is available in all sizes up to 12 ft (4m) diameter. Standard duct is available in 5 ft and 10 ft lengths, or custom sizes of any length up to 10 ft (3m). Fittings available include tees, elbows, dampers, sample taps and accessory items of almost any configuration. See the Fitting Detail Sheets for a complete listing of standard parts.

There is a Difference - Don't Accept Second best -

Pure Guard SS gives you a thicker, tougher, more corrosion resistant exhaust duct, with better flame resistance, than the competition

** Pure Guard SS has a 60% thicker liner than ETFE lined duct, yielding a more corosion and permeation resistant duct system.

Halar provides excellent corrosion resistance to chemical contaminants commonly encountered in exhaust ducts, including:

• Hydrofluoric Acid (HF)
• Sulfuric Acid (H2SO4)
• Nitric Acid (HNO3)
• Piranha
• Hydrogen Peroxide (H2O2)
• Ozone (O3)
• Ammonium Hydroxide (NH4OH)
• All Alkaline Chemistries
• All Etchants and Strippers
  

Corrosion resistance of linings is a function of the lining thickness. By providing a liner up to 60% thicker than it’s competition, Composites USA Pure Guard SS offers the best assurance for years of successful use.

Halar ECTFE, in comparison to Teflon ETFE (competitive lined stainless steel duct material), is harder to ignite, does not drip like ETFE when exposed to flame, and provides a smoother, tougher, more abrasion resistant coating.

Experts in the application of Halar to solve process corrosion problems, Composites USA has been providing quality products to clients worldwide since 1982. We have provided ECTFE sheet lined fiberglass and steel vessels for ultra-high purity applications, and Halar reinforced FRP duct for corrosive exhaust. We are the world’s largest consumer of Halar veils for FRP manufacturing applications. Our engineers hold key application patents in this area.

Composites USA, with industry recognized Approvals and Listings from Factory Mutual, Underwriters Laboratories, and the U.S. Government, is well poised to be your strategic partner.

Composites USA is the only company in the world able to offer both fiberglass (GRP/FRP Dual Guard 2000) and stainless steel FM Approved duct systems for clean room corrosive fume and smoke exhaust. We can provide single source responsibility for hybrid systems, and you can rely on us to provide honest, unbiased opinions for the relative merits of each type of system.