Double Wall Insulated Spiral Duct

Doublewall spiral pipe catalog specs.

Double wall insulated spiral 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. Houston texas 77029 phone. Biyang double wall spiral duct is also named dual wall spiral pipe double wall round duct and double wall insulated 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.

Duct direct 8610 wallisville rd. 713 672 0509 toll free 877 774 duct 3828. Doublewall spiral pipe and fittings for commercial and industrial hvac ductwork. 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.

Gasketed up to 36 flanged or spiralmate by ductmate industries connections are also available. Our double wall duct and fittings also control radiated noise better than similar sizes and shapes of externally insulated sheet metal duct. The insulation in our double wall spiral and fittings has both acoustical and thermal benefits. Double wall spiral ducts are as the name suggests comprised of two walls.

First there is the larger duct that s visible to everyone. Dual wall also called double wall insulated spiral pipe. 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. Zen s 1 inch insulation has a thermal conductance of 0 27 btu hr x sq.

It can reduce radiated noise by 25 db or more compared to fiberglass duct board. Standard connections are slip fit with couplings. Double wall pipe and fittings with e z flange and barrel clamp or standard slip connection sheet metal connectors inc. It is a kind of metal duct designed and produced to offer an excellent acoustical and thermal function for hvac ductwork applications.

These two components help ensure a more consistent airflow temperature during delivery. Double wall round spiral duct and fittings are one part of our complete line of hvac products. Next there s the second inner spiral duct. It is shipped from the factory with the insulation pre installed reducing job site labor costs.