VCD Duct

VCD Duct

 Volume Control Damper (VCD) is a specific type of damper used to control the flow of air in an HVAC heating or cooling system. In order to improve efficiency and occupant comfort, HVAC systems are commonly divided up into multiple zones.

    Material

  • Galvanized steel, complying with ASTM A653/A653M, G60 coating designation
  • Thickness: 24-gauge for standard applications, heavier gauges available upon request
  • Aluminum or stainless steel options available, meeting relevant ASTM standards

    Dimensions

  • Specify diameter range or exact size as per project requirements

Specifications:

    Construction:
  • Helically formed with a single continuous seam for smooth interior and enhanced airflow
  • Fabricated to SMACNA standards with precise tolerances for roundness and alignment
  • Reinforced with internal stiffening beads for structural integrity
  • Spiral lock seam or longitudinal welded seam for strength and durability
    • Sealing:
  • Joints sealed with UL-listed duct sealant, meeting UL 181A or UL 181B specifications
  • Alternatively, sealed with UL-listed foil tape, complying with UL 181B-FX standards
    • Insulation (if applicable):
  • Fiberglass insulation, 1" thickness, complying with ASTM C547/C547M standards
  • Insulation density: [Specify density]
    • Quality Assurance:
  • Fabricated by certified sheet metal contractors, adhering to SMACNA standards and industry best practices
  • Quality control inspections conducted at various stages of fabrication to ensure dimensional accuracy, seam integrity, and surface finish
    • Installation:
  • Installation performed by qualified technicians in accordance with SMACNA standards, manufacturer guidelines, and local building codes
  • Ductwork installed securely using approved supports and fasteners, with proper clearances and sealing to prevent air leakage