Double Wall Insulated Ductwork

Double wall duct is fabricated with either snap lock or pittsburgh longitudinal seams.

Double wall insulated ductwork.

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. Here are some of the product options for round insulated duct that are available from spiral pipe of texas. Straight double wall duct comes standard with stiffening beads. It is a kind of metal duct designed and produced to offer an excellent acoustical and thermal function for hvac ductwork applications.

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. 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 stainless steel exhaust systems chimneys made of stainless steel with high quality insulation material available in different designs materials and colors. The first rigid phenolic pre insulated ductwork in the world to be ul 181 listed as a class 1 air duct. 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.

Dual wall also called double wall insulated spiral pipe. Acoustically insulated double wall ductwork 23 31 12 4 13 hc1 033 2 03 round double wall duct fitting gauges a. When a perforated inner liner is specified a retaining fabric must be wrapped between the perforated inner and the glass fiber insulation. Double wall duct and fittings mcgill airflow s rectangular k27 duct and fittings provide exceptional noise and thermal control in air handling systems.

Sealant is available in the seams upon request. Biyang double wall spiral duct is also named dual wall spiral pipe double wall round duct and double wall insulated duct. 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. 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.

Overall interior insulation duct liners perform well in terms of thermal efficiency and noise reduction. 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. Double wall duct is manufactured completely assembled with tdc corners installed.