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Betec Cad
2250 E. Devon A Ve., Ste 230
Des Plaines, Illinois-60018, USA
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Explosion Proof Dampers

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BETEC CAD Explosion proof Dampers can stand up to the toughest and most demanding environments and can be custom-built to meet the exact needs of virtually any ventilation or process applications.
Ex-D - GB / SB 40, Galvanized / Stainless Steel Construction
Aerofoil Blades; Static / Dynamic; Fire Rating : 3 Hrs.
Leakage Rating to Class-2, at 250°F. Drive : Electric / Pneumatic.: Ex-D-GB-40B ; Ex-D-GB-40BPn ; Ex-D-SB-40B ; Ex-D-SBPn
Ex-D SB-40 Series is a stainless steel high performance 3hr. rating fire damper, to ensure lowest resistance to airflow in HVAC systems with velocities to 3000 fpm (10.2 m/sec.) and 4” w.g. (1000Pa) may be installed vertically or horizontally (with blades running horizontally) and is rated for airflow and leakage class 2 in either direction.
Ex-D-GB-40 --- All Steel Heavy Duty Industrial 2’’(50mm) Flanged Frame Damper.
Max. System velocity --- 3000FPM ; Max. air leakage ---- 0.4% with seal.

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