A60 Pneumatic Ship Fire Damper
1. Product Description:
The A-60 Marine Fire Damper is tested and Bureau Veritas approved for fitting to Class A-60 Divisions (bulkheads and decks). It is constructed with aerodynamic stainless steel interlocking parallel blades and closes upon high temperature or loss of electric power connection. The A-60 is fitted with an electrical thermal release device (ExPro-TT) which includes a manual test switch that allows periodic operation of the damper for testing purposes.
2. Operating Principle:
Fire damper consists of pneumatic actuator(rotating cylinder), manual reversing valve, fire brake body and temperature sensor etc.
When the air source provides a certain amount of compressed air to the pneumatic actuator through the manual directional valve and the mechanically controlled directional valve, the rotating cylinder drives the damper blade to rotate 90 degrees, and the gate is in a full open state. When the fusible plate of the temperature sensor fuses, the action of timing controlled directional valve can cutoff the air supply to the rotating cylinder, and the exhaust pipe is opened, the compressed air in the cylinder is discharged, and the damper blade is driven to reserve rotate 90 degrees under the action of the rest inside the cylinder, and the strobe is in the closed state.
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