Double Wall Insulated Spiral Duct

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.

Double wall insulated spiral duct.

Biyang double wall spiral duct is also named dual wall spiral pipe double wall round duct and double wall insulated duct. Double wall insulated spiral is available with solid or perforated liners. Double wall pipe and fittings with e z flange and barrel clamp or standard slip connection sheet metal connectors inc. Double wall spiral ducts are as the name suggests comprised of two walls.

Next there s the second inner spiral duct. 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. Houston texas 77029 phone. 713 672 0509 toll free 877 774 duct 3828.

Zen s 1 inch insulation has a thermal conductance of 0 27 btu hr x sq. The insulation in our double wall spiral and fittings has both acoustical and thermal benefits. First there is the larger duct that s visible to everyone. Doublewall spiral pipe and fittings for commercial and industrial hvac ductwork.

Mylar barrier is available as a barrier between perforated liner and insulation. Standard connections are slip fit with couplings. It is shipped from the factory with the insulation pre installed reducing job site labor costs. Dual wall insulated spiral pipe consists of two concentric spiral pipes with insulation filling the space between the pipes.

Gasketed up to 36 flanged or spiralmate by ductmate industries connections are also available. Dual wall also called double wall insulated spiral pipe. It can reduce radiated noise by 25 db or more compared to fiberglass duct board. Our double wall duct and fittings also control radiated noise better than similar sizes and shapes of externally insulated sheet metal duct.

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. Double wall round spiral duct and fittings are one part of our complete line of hvac products. Doublewall spiral pipe catalog specs. 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.