Flanged Branch 12ga

Nordfab manufactures ducting for use in dust, mist, and fume collection systems.

Our 12 gauge Flanged Branches (sometimes called “wyes” or “laterals”) are provided with industry-standard Angle Flanges on both ends, the flanges are loosley retained via a vanstone lip so that bolt holes can easily be aligned with those on existing flanged connections.

12 Gauge Branches have leak-free, solid welded seams, which make them ideal for applications where material conveyed in the dust collection line is highly abrasive or for areas in the duct line where there is excessive wear.

Standard 30º, available with 45° angle
When ordering, specify A, B, C.A – C ≥ C – B
Use formula above to determine if a reducer is needed at C end.
Use the following formula to determine length: L = C X 2 + 15"
Available in galvanized steel or carbon steel
Diameters up to 72"
Flange gaskets available
If welded flanges are required, clocking must be specified. Flanges with custom hole patterns available

Contact Nordfab or your local Nordfab dealer for assistance with optional end types, larger sizes, and material / gauge options.

Specification

A. General Fabrication Requirements: Comply with SMACNA's "HVAC Duct Construction Standards - Metal and Flexible," Ch. 3, "Round, Oval, and Flexible Duct," based on indicated static-pressure class unless otherwise indicated.
1. Construct ducts of galvanized sheet steel unless otherwise indicated. 304SS Optional.
2. Basis-of-Design Product: Subject to compliance with requirements, provide Nordfab Ducting, LLC; Quick Fit (QF) Duct.
B. Connection Joints: Joint types are fabricated in accordance with SMACNA's "HVAC Duct Construction Standards - Metal and Flexible," for static-pressure class, applicable sealing requirements, materials involved, duct-support intervals, and other provisions in SMACNA's "HVAC Duct Construction Standards - Metal and Flexible."
1. Quick Fit Joints in Ducts 3 to 24 inches (76 to 510 mm) in diameter. Flange: Optional.
2. Flanged Joints in All Ducts Greater than 24 inches (610 mm) in diameter.
C. Longitudinal Seams: Seam types are fabricated in accordance with SMACNA's "HVAC Duct Construction Standards - Metal and Flexible," Figure 3-2, "Round Duct Longitudinal Seams," for static-pressure class, applicable sealing requirements, materials involved, duct-support intervals, and other provisions in SMACNA's "HVAC Duct Construction Standards - Metal and Flexible."
1. Fabricated round ducts 3 to 24 inches (76 to 510 mm) in diameter to have laser-welded or plasma-welded longitudinal seams.
2. Fabricated round ducts above 24 inches (610 mm) in diameter to have plasma-welded longitudinal seams.