Delta "T" Systems
Smoke And Fire Dampers
Smoke And Fire Dampers

So often overlooked in the majority of marine applications, this difficult to find, yet vital safety component is now designed and produced for the Yacht & Shipbuilding Industries exclusively by Delta "T" Systems. The effectiveness of any installed fire system can be greatly enhanced if the ventilation openings to the protected compartment are closed at or before the discharge of the extinguishing agent. In the event of a fire system discharge, the Marine Smoke/Fire Damper provides for nearly instantaneous closure of the ventilation openings, thus preventing dilution of the extinguishing agent as well as preventing additional oxygen to enter the space to fuel and spread a fire. The Delta "T" Systems Marine Smoke/Fire Damper is an integral part of a properly designed ventilation and fire protection system aboard any vessel.


Round Dampers
Our round dampers are designed to close-couple directly to either end of Delta "T" Systems Marine Axial Fans (standard sizes from 12" ID through 60" ID) to provide the safest, most compact, high volume ventilation component assembly available. The short casing design allows the damper blade to project into the open section of the plenum to minimize overall length.


Rectangular Dampers
Rectangular dampers may also be installed independently within an airshaft or plenum if no fan is installed. Using silicone blade seals, these units are provided with a simple mounting flange for attachment. These dampers may be configured in a wide variety of sizes.

Round and rectangular dampers may be automatically closed via a pneumatically controlled actuator. Actuators are suitable for use with CO2, Halon, FM-200 and other pressurized fire suppression systems and are U.S. Coast Guard (162.038/7/0), American Bureau of Shipping, UL (EX-2968) and Factory Mutual type approved. Just 70 PSI is required to provide instantaneous, spring-loaded closure of the air duct. Dampers may also be manually actuated and reset from outside of the damper casing. As an option, all dampers may be fitted with electric "fail-safe" type actuators. These are available in 24 volts DC, 110 volts or 230 volts AC. Electric dampers will close automatically upon loss of electrical current supply. Delta "T" Systems also carries a full line of A-60 fire rated dampers.

A-60 damper tests and approvals include:
• Lloyds Register of Shipping Approved
• Marine Equipment Directive Compliant
• USCG Approved
• Germanischer Lloyds Approved
• American Bureau of Shipping Approved
• Corrosion Tested
• Vibration Tested

Smoke & Fire Dampers.pdf

A60 Dampers.pdf

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Application Data Worksheet