Double Wall Spiral Duct Dimensions

Galvanized and ss are available.

Double wall spiral duct dimensions.

Wonder flange rings are fused together at the factory and arrive at the jobsite ready for mounting. Dual wall double wall insulated spiral is available with solid or perforated liners. E z flange with barrel clamp 26 to 96 diameter. Roll formed continuous interlocked pipe.

K value is 0 27. Surface burning characteristics are. Biyang double wall spiral duct is also named dual wall spiral pipe double wall round duct and double wall insulated duct. Air distribution corporation spiral duct and fittings are manufactured in accordance with applicable smacna ashrae and spida standards.

The outer wall performs as the pressure shell and will be constructed and sealed for the appropriate pressure class. X 2 inches for inner liner minor axis dimensions greater than 7 inches double wall duct and fittings can be ordered with van stone or applied connectors installed on the outer shell. Mild steel is the standard material. Biyang double wall spiral duct is made of big spiral duct outside insulation in the middle and small spiral duct inside.

This insulation has thermal conductivity of 0 26 btu in hr. Dual wall duct sizes are listed using the inside diameter. Flame spread 25 and smoke developed 50. Fittings 3 12 26 14 24 24 26 36 22 38 48 20.

Mylar barrier is available as a barrier between perforated liner and insulation. Dual wall duct is also available in 2 3 and 4 thickness. Duct direct 8610 wallisville rd. For these cases the inner liner does not project beyond the outer shell x 0 inches and a slip fit.

713 672 0509 toll free 877 774 duct 3828. Gauge schedule size dia. Ft f at 75. Spiral double wall duct size pipe outer wall size inner wall positive pressure to 10 w g.

Paint grip minimum gauges for spiral pipe construction. Uni gasket fittings are compatible and available with all of mcgill airflow s round double wall duct types in 1 inch increments for 5 through 12 inch diameters outer shells and in 2 inch increments in 14 through 24 inch outer shell diameters. Wonderflanges can be used on 1 2 3 or 4 double wall spiral pipe and fittings. It is a kind of metal duct designed and produced to offer an excellent acoustical and thermal function for hvac ductwork applications.

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