Double Wall Insulated Spiral Duct

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 spiral duct.

The insulation in our double wall spiral and fittings has both acoustical and thermal benefits. Thermaduct s inspiral r and floval duct systems are preinsulated spiral and flat oval double wall ductwork alternatives that offer significant weight savings and near zero air leakage. In double wall round spiral duct a metal inner liner insures that high airflow velocities cannot separate insulation by pulling away from the duct s outer wall and creating erosion or airflow problems. Our double wall duct and fittings also control radiated noise better than similar sizes and shapes of externally insulated sheet metal duct.

It is shipped from the factory with the insulation pre installed reducing job site labor costs. Smc double wall round spiral duct is a dependable erosion resistant alternative to lined round spiral duct providing improved protection for insulation exposed to the airstream. Double wall pipe and fittings with e z flange and barrel clamp or standard slip connection sheet metal connectors inc. Doublewall spiral pipe and fittings for commercial and industrial hvac ductwork.

Next there s the second inner spiral duct. Double wall round spiral duct and fittings are one part of our complete line of hvac products. Mylar barrier is available as a barrier between perforated liner and insulation. Standard connections are slip fit with couplings.

Double wall insulated spiral is available with solid or perforated liners. It can reduce radiated noise by 25 db or more compared to fiberglass duct board. Double wall duct and fittings can reduce radiated noise by 25 db or more compared with fiberglass duct board and by 30 db or more com pared with insulated flexible duct. Doublewall spiral pipe catalog specs.

Zen s 1 inch insulation has a thermal conductance of 0 27 btu hr x sq. Duct direct 8610 wallisville rd. Houston texas 77029 phone. First there is the larger duct that s visible to everyone.

Biyang double wall spiral duct is also named dual wall spiral pipe double wall round duct and double wall insulated duct. Dual wall also called double wall insulated spiral pipe. 713 672 0509 toll free 877 774 duct 3828. Double wall spiral ducts are as the name suggests comprised of two walls.