Hvac Spiral Duct Sizes

Galvanized steel has good corrosion resistance.

Hvac spiral duct sizes.

We make diameters ranging from 3 to 92 and metal thicknesses from 26 gauge to 16 gauge. If desired airflow exceeds the cfm rating increase to the next duct size 4. Pvc coated steel combines the strength of steel with the corrosion resistance of plastic. Common circular ductwork sizes used in air handling ventilation systems.

A spiral seam makes this duct strong and rigid. Standard spiral pipe end. Air ducts velocity diagram air flow volume duct size. It has smooth interior for low friction loss with the grooved seam entirely on the outside.

Ventilation systems for ventilation and air handling air change rates ducts and pressure drops charts and diagrams and more. How to use duct chart. Air ducts friction loss diagram a major loss diagram for air ducts imperial units ranging 10 100 000 cfm. For technical drawings and 3 d models click on a part number.

Spiral pipe and fittings product pages. All fittings can be manufactured with. These may be with or without duct sealant. Air ducts sizing air flow and required duct area.

All 22 gauge spiral pipe measures 1 16 less than the noted diameter on the inside i d. The following is our construction standard for positive pressures to 10 wg. Design cfm 4 cfm 6 cfm 8 cfm 10 cfm 12 60 6x4 60 4x6 90 4x8 120 4x10 150 4x12 90 8x4 110 6x6 160 6x8 215 6x10 270 6x12 120 10x4 160 8x6 230 8x8 310 8x10 400 8x12 150 12x4 215 10x6 310 10x8 430 10x10 550 10x12 180 14x4 270 12x6 400 12x8 550 12x10 680 12x12 210 16x4 320 14x6 490 14x8 670 14x10 800 14x12 240 18x4 375 16x6 580 16x8 800 16x10 950 16x12 270 20x4 430 18x6 670 18x8 930 18x10 1100. Select the duct size from the table that can carry that volume of air 3.

Example 6 diameter is 5 15 16 i d. 304 stainless steel is more corrosion resistant than steel. A round duct with a cross sectional area of 0 6m2 has a perimeter of 2 75m a rectangular duct with an equal cross sectional area has a perimeter of 3 87m the rectangular duct therefore requires more metal for its construction this adds more weight and costs to the design. Identify the volume of air that will be passing through the duct 2.

It is considerably stronger than longitudinal pipe of the equivalent gauge. Spiral pipe is available in 3 inch to 36 inch diameter in five foot lengths. Fittings have male ends with a slightly smaller diameter to press fit into duct. With barrel clamp 6 to 24 diameter.

Complete seal spiral pipe system 6 to 24 diameter even sizes e z flange jr. E z flange with barrel clamp 26 to 96 diameter. Listed cfm is based on typical field results and may vary install dampers 5.