ISO 9001 : 2008

CERTIFIED

VCD B 20 series – AMCA

Type: Square and Rectangular

Model: VCD-GB-21B

Blade Type: 3V Single Skin ; Galvanized Construction

Blade Operation: A-Parallel, B-Opposed, C-Gear Opposed

 

BETEC CAD. B-21 Series volume control dampers are square and rectangular type with parallel or opposed blade operation having single skin blade design. These dampers are subjected to medium pressure applications to achieve low leakage efficient operation.

 

The square and rectangular type VCD’s are designed for handling maximum air capacities at minimum pressure drop.

Damper Performance Ratings

Operating Pressure – 6”w.g (1500Pa.) Max.

Leakage – Class-I (Refer AMCA 500-D-12)

Velocity – 2000fpm (10.1m/s).

Standard Construction

Frame

6’’x1.18” x 18 gauge (150 x 30 x 1.2mm) thick roll formed galvanized steel ‘C’ Channel with Embossed type for low leakage application.

Blades

6” (152 mm) wide, 1.2 mm (18 gauge) thick galvanized steel 3V type roll formed.

Bushes

Nylon.

Mechanical Linkage

Galvanized steel linkages concealed in the frame.

Axles

12mm square galvanized steel.

Quadrant

Heavy gauge galvanized steel with position indications Shut, 1/4, 1/2, 3/4,Open.

Gasket

Neoprene/Foam/Silicone Rubber Gasket*

JambSeal

0.3mm thick Stainless spring steel

Optional Fittings

Gear Wheel

Gear wheels are of heat resistant Nylon placed with in the frame instead of mechanical linkage for rattle free smooth operation, operated with PVC knob/Quadrant.

Bushes

Brass/Bronze*/StainlessSteel.

Axles

12mm diameter galvanized steel.

Transitions

Neck adapt or for round duct connections.

 

Alphabet indicates the type of blade operation

A-Parallel Blade

B-Opposed Blade

C-Gear Opposed Blade

Optional Construction

Frame :Thickness upto 1.5mm

Frame Depth :130 mm Optional

Blade :Thickness upto 1.5mm

Blade Width :Upto 150 mm

Frame and Blade Material :Stainless Steel(304/316L)
:Aluminium

 

Note:

Increments of 2” (50mm) possible with combination of 4’’6’’blade width.

Maximum single module size is 48”x48” (1200x1200mm).

Damper, width W > 48” (1200mm) or H > 48” (1200mm), is provided with a center mullion partition.

Dampers of size W or H > 800mm will have blade with stiffener

*Indicates Betec Cad Models Certified by AMCA.

Request for Quotation

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    Galvanized construction, 3-hour, Class 3 leakage at 350° F, 3V single skin blade, 4 in. wg, 2000 fpm, operating temperature 250° C up to 2 hours
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  • MSFD-GB-31C2-A-R

    Galvanized construction, 3-hour, Class 2 leakage at 250° F, 3V single skin blade, 4 in. wg, 2000 fpm, operating temperature 250° C up to 2 hours
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  • MSFD-GB-31C1-A-R

    Galvanized construction, 3-hour, Class 1 leakage at 250° F, 3V single skin blade, 4 in. wg, 2000 fpm, operating temperature 250° C up to 2 hours
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