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ENERVEX POWERSTACK / GREASE DUCT
PowerStack is a "Universal Venting System". It is a state-of-the-art, multi-application single or twin-walled exhaust product designed to convey gases, particles, fumes, smoke, grease and products of combustion.
Industry-only multi-use chimney system with 9 UL listings
Only chimney system listed for use with Category I, II, III and IV appliances - in a single chimney system!
22 internal diameters ranging from 4 inch (100mm) to 48 inch (1200mm).
Single and double wall for use with Categories I, II, III and IV gas-fired appliances, high-efficiency gas boilers, furnaces, booster heaters, pool heaters, water heaters, unit heaters or tankless water heaters
Listed as Type BH gas vent systems for appliances having a rated operating flue temperature of 480°F
Type L-Vent (SSD only) for venting listed SAS or oil fired appliances certified with Type L low temperature venting system
Systems are interchangeable; you can go from a single to double-wall with the use of an adapter
Laser butt-welding reinforces strength and prevents leakage while increasing durability and reliability
Flex features a smooth inner wall that provides for no output reduction, while supporting system’s overall strength
Built-in draw latches provide quick and easy tool-free assembly and disassembly, requiring less time on the job site
Viton-seals more resistant than silicone against chemicals such as sulfiric acid often found in condensate
Standard adjustable vent length provides vertical or horizontal adjustment for easy system pitching
AL29-4C® stainless steel resists the extreme corrosive environments found in condensing boilers, assuring trouble-free operation and longer product life
Flex made from super-ferritic stainless steel, providing protection against chloride ion pitting and corrosion.
Integrated centering sleeve stabilizes the tubes during assembly and covers joint grooves that might otherwise be exposed and trap grease contaminants. Also provides a channel for high temp sealant to accurately insure system water tightness. Extra large spacing between outer wall sections allows for quick and easy installation of the securing band.
Fire-rated (CIX3Z) significantly reducing installation footprint and frees up space for other use. No need to build an expensive fire-rated chase or apply two layers of fire wrap typically required for welded steel grease duct designs.
Available in 5″- 36″; 3″ wall insulation and single wall. Secure Stack Pro is now UL 1978 listed for applications where 1” air insulated, 1”, 2”, or 4” AES Wool Insulated grease duct is required. Please see the Secure Stack Pro product pages for more details.
UL1978, UL2221 (2 HR)
IMC, UMC and NFPA96 Code Compliance
Blanket insulation is already installed in the portion that lines up with the outside casing. We provide an insulation band to be field installed behind the outside band.
Goes together with the inner flange and inner locking band (with centering extension). The outer locking band is on the outside for more support, making it a stronger system.