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Square Volume Control Damper

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Characteristics

The model ATVCD-SQ series control dampers or balancing dampers (CS/BS) are manufactured as per DW144/SMACNA standards. This series of dampers are used in HVAC ducting system to regulate air flow and pressure. Multiple regulating aerofoil blades are mounted in GI housing and are controlled through gears from one point. A unique control handle made out of high impact strength plastic with position indicator and locking screw is provided as standard option. All drive gears and spindles are of nylon to deliver years of fool-proof operation. All dampers are manufactured and inspected before dispatch as per the companies quality assurance and quality control procedures.

General Specifications

Frame 0.80mm / 1.0 mm Thick Galvanised Metal
Blades Extruded Aluminum Profiles (CS/BS)
Gears/spindles High Quality Nylon
Control Knob High impact resistant Plastic

Model:

ATVCD-SQ-Type SF

Connection Type Rectangular / Square Flanges Connections
Mounting Horizontal or Vertical
Air Velocity Medium /Low subject to the position and size of product
Flange options Two type of Flange options 25mm/35mm are available.


Model:

ATVCD-SQ-Type SS

Connection Type Rectangular / Square Spigot Connec- tions
Mounting Horizontal or Vertical
Air Velocity Medium /Low subject to the position and size of product
Flange options Add on Flange options of 25mm/35mm are available on re- quest.


Model:

ATVCD-SQ-Type RS

Connection Type Spigot Connection – Circular
Mounting Horizontal or Vertical
Air Velocity Medium /Low subject to the position and size of product


Model:

ATVCD-SQ-Type OS

Connection Type Spigot Connection – Oval
Mounting Horizontal or Vertical
Air Velocity Medium /Low subject to the position and size of product

Damper Blade Specifications

CS Type — These extruded aluminum aerofoil blades are generally used in CS series con- trol dampers. The high quality bulb seals inserts on the aerofoil blades gives excellent volume control performance by virtually eliminating the possibilities of air leakage through blade gaps.

BS Type — These extruded aluminum aerofoil blades are generally used in BS series balancing dampers. All other characteristics for BS type are the same except the bulb seals.

Dimensional Data

RECTANGULAR – SQUARE FLANGE        MODEL : ATVCD-SQ-Type SF (CS/BS)

RECTANGULAR – SQUARE SPIGOT         MODEL : ATVCD-SQ-Type SS (CS/BS)

ROUND SPIGOT                                           MODEL : ATVCD-SQ-Type RS (CS/BS)

OVAL SPIGOT                                              MODEL : ATVCD-SQ-Type OS (CS/BS)

Notes :

  1. All dimensions are in Millimeters.
  2. Actual Spigot dimensions will be 3mm less than the listed size.
  3. Up to 1000mm width and height will be supplied as single unit and above 1000 in multiple units with one casing.
  4. For multiple units one actuator will be provided for each unit.

Operational Mechanism

 Material Specifications

Structural Casing 0.80mm/1.00mm thick galvanized Sheets ASTM 643 with G90 zinc coating. Gears Injection moulded Nylon
Aerofoil blades Made of Extruded Aluminum Profiles with a wall thickness of 1.20mm either plain or bulb sealed. Control Knob Injection moulded high impact resistant plastic.
Bulb Seals Extruded Synthetic Seal with 1.00mm wall thickness (applicable for CS type only) Paints Zinc rich aluminum paint for weld joints.
Spindle & Bush Injection Moulded Nylon Sealants High quality Grey Silicone

Pressure Drop / Velocity Graph

 

Specifications subject to change without notice