Round Pneumatic Explosion Proof Fire Damper:

China Round Pneumatic Explosion Proof Fire Damper:

Fire damper is installed on the ventilation duct with fire requirement, used to prevent the fire from spreading. When on fire, the temperature in the duct reaches 70℃, the fire damper will automatically close quickly to avoid fire spreading. Pneumatic fire damper is controlled by the pneumatic actuator.

Technical Specification:

Design Standard: CB/T3557-1995

Shape: Round, Rectangular

Blade Type: Single Blade, Multi Blades

Material: Steel, Stainless Steel, Steel with Galv

Main Parts: pneumatic actuator, temperature detector, damper body, damper plate, main shaft, flange.

Fireproof Class: A0,A15, A30, A60

Certificate:ABS,BV,CCS,DNV,GL,LR,NK,KR

Main Functions & Features:

1) When the fire damper is connected to the compressed air or power on,the damper is turned on.When the damper loses the air or power,it is turned off. Pneumatic working pressure 0.5-0.8Mpa;
3)The solenoid valve can be controlled remotely or nearby to turn on or off the power supply, thereby opening or closing the damper;
4) Under an emergency situation, the damper can be closed remotely or nearby with the dragging line on TG.

2) When the temperature within the duct reaches 70 ± 3 ℃, the temperature fuse is blown, the reversing valve acts to cut off the air supply, close the damper;

Main Size List(mm)：

L can be decided by the customer. But in the type approval certifiate, L=320mm