Double Wall Spiral Duct Dimensions

Biyang double wall spiral duct is made of big spiral duct outside insulation in the middle and small spiral duct inside.

Double wall spiral duct dimensions.

Galvanized and ss are available. Biyang double wall spiral duct is also named dual wall spiral pipe double wall round duct and double wall insulated duct. Paint grip minimum gauges for spiral pipe construction. The outer wall performs as the pressure shell and will be constructed and sealed for the appropriate pressure class.

Spiral double wall duct size pipe outer wall size inner wall positive pressure to 10 w g. Gauge schedule size dia. 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. Mild steel is the standard material.

Duct direct 8610 wallisville rd. Ft f at 75. 713 672 0509 toll free 877 774 duct 3828. Flame spread 25 and smoke developed 50.

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. Surface burning characteristics are. This insulation has thermal conductivity of 0 26 btu in hr. Houston texas 77029 phone.

Wonder flange rings are fused together at the factory and arrive at the jobsite ready for mounting. 1 2 and 3 insulation thicknesses are available. It is a kind of metal duct designed and produced to offer an excellent acoustical and thermal function for hvac ductwork applications. E z flange with barrel clamp 26 to 96 diameter.

Fittings 3 12 26 14 24 24 26 36 22 38 48 20. Dual wall double wall insulated spiral is available with solid or perforated liners. Dual wall duct sizes are listed using the inside diameter. Wonderflanges can be used on 1 2 3 or 4 double wall spiral pipe and fittings.

K value is 0 27. Mylar barrier is available as a barrier between perforated liner and insulation. Roll formed continuous interlocked pipe. Spiral pipe 3 16 26 18 26 24 28 40 22 42 50 20 52 84 18 gauge schedule size dia.

For these cases the inner liner does not project beyond the outer shell x 0 inches and a slip fit.