Double Wall Insulated Spiral Duct

Double wall spiral ducts are as the name suggests comprised of two walls.

Double wall insulated spiral duct.

It is shipped from the factory with the insulation pre installed reducing job site labor costs. Duct direct 8610 wallisville rd. Doublewall spiral pipe and fittings for commercial and industrial hvac ductwork. Double wall round spiral duct and fittings are one part of our complete line of hvac products.

713 672 0509 toll free 877 774 duct 3828. We make double wall flat oval duct with outer shell dimensions ranging from 13 x 5 to 124 x 36. Zen s 1 inch insulation has a thermal conductance of 0 27 btu hr x sq. We make 516 spiral flat oval duct sizes that can be used for double wall construction excluding only the 3 and 4 minor axis duct sizes.

K value is 0 27. 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. First there is the larger duct that s visible to everyone. 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.

1 2 and 3 insulation thicknesses are available. Dual wall insulated spiral pipe consists of two concentric spiral pipes with insulation filling the space between the pipes. Biyang double wall spiral duct is made of big spiral duct outside insulation in the middle and small spiral duct inside. It can reduce radiated noise by 25 db or more compared to fiberglass duct board.

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. Mylar barrier is available as a barrier between perforated liner and insulation. The outer metal shell of straight duct may be spiral flat oval lock seam duct or longitudinal seam welded duct. Dual wall also called double wall insulated spiral pipe.

The insulation in our double wall spiral and fittings has both acoustical and thermal benefits. A traditional spiral duct system may be more efficient than the average rectangular duct but double wall spiral ducts offer even more efficiency in terms of energy costs. Dual wall double wall insulated spiral is available with solid or perforated liners. Houston texas 77029 phone.

It is a kind of metal duct designed and produced to offer an excellent acoustical and thermal function for hvac ductwork applications.