Double Wall Insulated Ductwork

The first rigid phenolic pre insulated ductwork in the world to be ul 181 listed as a class 1 air duct.

Double wall insulated ductwork.

Double wall insulated round ducts. Biyang double wall spiral duct is made of big spiral duct outside insulation in the middle and small spiral duct inside. 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. Double wall insulated duct and fittings mcgill airflow corporation s double wall insulated duct and fittings pro vide exceptional noise and thermal control in air handling systems.

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. 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. Straight double wall duct comes standard with stiffening beads. Spiral manufacturing offers standard solutions but we have the flexibility to meet your special needs.

Here are some of the product options for round insulated duct that are available from spiral pipe of texas. Double wall stainless steel exhaust systems chimneys made of stainless steel with high quality insulation material available in different designs materials and colors. Dual wall also called double wall insulated spiral pipe. When a perforated inner liner is specified a retaining fabric must be wrapped between the perforated inner and the glass fiber insulation.

Thermal double wall duct for temperature control. Overall interior insulation duct liners perform well in terms of thermal efficiency and noise reduction. Duct insulation is also critical in reducing hvac system noise. Double wall duct and fittings will consist of a perforated or solid inner liner 1 thick x 1 0 lb ft layer of glass fiber insulation and a solid outer pressure shell.

Sealant is available in the seams upon request. Double wall duct is manufactured completely assembled with tdc corners installed. Double wall duct and fittings mcgill airflow s rectangular k27 duct and fittings provide exceptional noise and thermal control in air handling systems. It is a kind of metal duct designed and produced to offer an excellent acoustical and thermal function for hvac ductwork applications.

Factory insulated duct products reduce field labor as well as giving consistency and product features you won t get with thermal wrap. Low air leakage easily achieves smacna class 3. Biyang double wall spiral duct is also named dual wall spiral pipe double wall round duct and double wall insulated duct.