Flanged Double Branch 12ga

When ordering specify A, B, C, D and end type(s). (A – C) ≥ (C-B) and (C) ≥ (D) Reducer at C or D may be required. Use formula above to determine. Use the following formula to determine length: L = C X 2 + 15”.

A vanstone end with rotational Angle Flanges is standard. If welded flanges are required, clocking must be specified. Flanges are industry standard Angle Flanges.

12 gauge steel material adds extra durability.

Galvanized steel construction
Available with 30° or 45° angle
Additional branch gauges available: 22, 20, 18, 16, 14, and 10

Contact Nordfab or your local Nordfab dealer for assistance with ordering 12 gauge Flanged Branches.

Specifikáció

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.