Double Wall Spiral Duct Insulation

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 spiral duct insulation.

Insulation it is comparatively easy to insulate a double wall spiral duct compared to a rectangle wall duct. Double wall insulated spiral is available with solid or perforated liners. 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. Zen s 1 inch insulation has a thermal conductance of 0 27 btu hr x sq.

Duct direct 8610 wallisville rd. Gasketed up to 36 flanged or spiralmate by ductmate industries connections are also available. 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. It is insulated from the outer parts compared to the rectangle wall duct which has to be insulated from the inner sections.

Cost dual wall spiral duct is relatively affordable compared to the rectangular wall duct. Houston texas 77029 phone. Double wall spiral available with insulation thicknesses of 2 inches 0 13 btu hr xsq. Spiral sg double wall insulation is a thermal and acoustical rotary process fiber insulation designed for use in double wall spiral hvac ducts.

X degree fahrenheit and 3 inches 0 09 btu hr x sq. Double wall spiral ducts are as the name suggests comprised of two walls. 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.

The insulation in our double wall spiral and fittings has both acoustical and thermal benefits. Spiral sg double wall insulation is a thermal and acoustical insulation designed for use in double wall spiral hvac ducts. The resilient fiberglass blankets resist damage during fabrication and carry a ul fire hazard classification rating of 25 50. Spiral sg is made from rotary process glass fibers bonded with a thermosetting resin.

Mylar barrier is available as a barrier between perforated liner and insulation. First there is the larger duct that s visible to everyone. 713 672 0509 toll free 877 774 duct 3828. Dual wall insulated spiral pipe consists of two concentric spiral pipes with insulation filling the space between the pipes.

Our double wall duct and fittings also control radiated noise better than similar sizes and shapes of externally insulated sheet metal duct. Standard connections are slip fit with couplings.