Double Wall Insulated Ductwork

Double wall insulated round ducts.

Double wall insulated ductwork.

Biyang double wall spiral duct is made of big spiral duct outside insulation in the middle and small spiral duct inside. Double wall duct is manufactured completely assembled with tdc corners installed. They are constructed of a solid sheet met al outer pressure shell and a sheet metal inner liner with a layer of insu lation sandwiched between. Duct insulation is also critical in reducing hvac system noise.

It is a kind of metal duct designed and produced to offer an excellent acoustical and thermal function for hvac ductwork applications. Sealant is available in the seams upon request. Spiral manufacturing offers standard solutions but we have the flexibility to meet your special needs. Factory insulated duct products reduce field labor as well as giving consistency and product features you won t get with thermal wrap.

Double wall duct is fabricated with either snap lock or pittsburgh longitudinal seams. Low air leakage easily achieves smacna class 3. Dual wall also called double wall insulated spiral pipe. Overall interior insulation duct liners perform well in terms of thermal efficiency and noise reduction.

Double wall stainless steel exhaust systems chimneys made of stainless steel with high quality insulation material available in different designs materials and colors. This double wall insulated ductwork is constructed of a solid metal outer pressure shell and a metal inner liner with a layer of insulation sandwiched between. Straight double wall duct comes standard with stiffening beads. A fiber free rigid insulation core minimizes the risk of loose fibers entering the airstream through the ductwork since distributed air does not come into contact with an insulation.

Provide minimum outer wall duct fitting construction gauges for round duct systems with pressures up to 2 inches w c as listed in section 23 31 10 low pressure ductwork as included in these specifications. Biyang double wall spiral duct is also named dual wall spiral pipe double wall round duct and double wall insulated duct. Acoustically insulated double wall ductwork 23 31 12 4 13 hc1 033 2 03 round double wall duct fitting gauges a. Double wall duct and fittings mcgill airflow s rectangular k27 duct and fittings provide exceptional noise and thermal control in air handling systems.

Thermal double wall duct for temperature control. When a perforated inner liner is specified a retaining fabric must be wrapped between the perforated inner and the glass fiber insulation. Here are some of the product options for round insulated duct that are available from spiral pipe of texas.