Nordfab Ducting

Flanged Reducer

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

Nordfab® Flanged Reducers provide easy transition from one size of duct pipe or fitting to a smaller size.

When ordering reducers, specify dimensions of both A and B ends.
Rotational Angle Flanges retained vanstone lip is standard. If welded flanges required, clocking must be specified.
Available in galvanized steel and 304SS (as shown below) or optional 316SS or carbon steel
Available with QF ends in diameters up to 24", and other various end types
Optional gauges 20, 18, 16, 14, 12 and 10
Flange gaskets available

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

Nordfab ducting has been used in a wide variety of applications, wherever dust collection or fine particulate transfer is required.

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.