Double Wall Spiral Duct Dimensions

Air distribution corporation spiral duct and fittings are manufactured in accordance with applicable smacna ashrae and spida standards.

Double wall spiral duct dimensions. Surface burning characteristics are. Roll formed continuous interlocked pipe. Houston texas 77029 phone. 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.

Dual wall double wall insulated spiral is available with solid or perforated liners. 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. Mild steel is the standard material. K value is 0 27.

Dual wall duct sizes are listed using the inside diameter. Gauge schedule size dia. Spiral double wall duct size pipe outer wall size inner wall positive pressure to 10 w g. Dual wall duct is also available in 2 3 and 4 thickness.

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. For these cases the inner liner does not project beyond the outer shell x 0 inches and a slip fit. Flame spread 25 and smoke developed 50. Biyang double wall spiral duct is also named dual wall spiral pipe double wall round duct and double wall insulated duct.

Fittings 3 12 26 14 24 24 26 36 22 38 48 20. Biyang double wall spiral duct is made of big spiral duct outside insulation in the middle and small spiral duct inside. It is a kind of metal duct designed and produced to offer an excellent acoustical and thermal function for hvac ductwork applications. Galvanized and ss are available.

Ft f at 75. Wonder flange rings are fused together at the factory and arrive at the jobsite ready for mounting. Duct direct 8610 wallisville rd. Wonderflanges can be used on 1 2 3 or 4 double wall spiral pipe and fittings.

Mylar barrier is available as a barrier between perforated liner and insulation. The outer wall performs as the pressure shell and will be constructed and sealed for the appropriate pressure class. Paint grip minimum gauges for spiral pipe construction. This insulation has thermal conductivity of 0 26 btu in hr.

713 672 0509 toll free 877 774 duct 3828.