Gas Tight Damper - Electric
Type : Gas Tight Damper
Model : For Electric Drive : GTD-GB-40-B-E
Blade : Aerofoil Type
Construction : Galvanized Steel (GI)
Construction : Stainless Steel (SS)
Gas tight dampers are designed such that they can isolate sections of a ventilation system with a very high level of sealing (gas tight). This can be required for safety reasons in certain operational conditions.
GTD-GB-40-B-E shut of dampers are designed so that after closure, even with failure of power supply to the actuator, the damper maintains the sealed closure in accordance with KTA 3601 (Guidelines for Nuclear Plant) and A0 A60 (type approved) for Marine, Oil & Gas applications. The compact design and robust actuator
mechanisms of these shut-off dampers enable them to be installed in any orientation.
Data
Damper Ratings
Max Leakage Rating :
As per Standards KTA 3601(0.01 m3/h x m2 at 2000 Pa)
Operational Rating :
Actual ratings are size dependent
Air Velocity:
3000 fpm (15 mt/sec) 2000 Pa
Pressure :
8″water gauge (2KPa).
Max . Holding Pressure:
20” W.g (5Kpa) (in closed condition)
Explosion Proof Ratings
Installation Area :
Zone 1,2,21,22
Ambient tempetature :
-40°…+40°C (at T6)
-40°…+50°C (at T5)
Certification for Gases :
II 2(1) G Ex d [ia] IIC T6
II 3 (1)G Ex nC [ia] IIC T6
II 3 (1)G Ex nC [ia] IIC T6
Certification for dust
II 2(1) G Ex d [ia] IIC T6
II 3 D Ex tD A22 IP66T80°C
Standard Construction Details
Frame
14 gauge (2 mm) thick galvanized steel sheet with 2″ (50mm) external flanges.
Blade
Double Skin blades (Aerofoil) of 14 gauge (2 mm) thick roll formed galvanized steel
Blade Seals
300°C High temp, resistant Silicon rubber blade seals.
Jamb Seals
Stainless Steel.
Bearings
High temperature resistant concealed ball bearings.
Axle
¾” (19 mm) Diameter axle.
Drive :
Operation by electric actuator 24V / 230 V
Model : Exmax / RedMax
Note :
* Standard Construction.
