Model SD18 & SD20 Smoke Dampers

TOXIC SMOKE IS A SILENT KILLER
“Smoke kills 80% of recorded fire victims. It causes confusion and panic, making firefighting and rescue difficult.”


It is because of toxic gases that are released from the infinite number of building materials, furnishings and other contents in a fire that we applied some imaginative engineering and a lot of actual application knowledge to develop our SD18 and SD20 smoke dampers. The great importance of effect duct closure is the basis of our smoke damper design. The results are smoke dampers that are reliable during emergency operation with a very low leakage factor.


The SD18 and SD20 Smoke Dampers
OLS Model SD18 and SD20 dampers have been designed with carefully chosen components to ensure a long-lasting, trouble-free and reliable operation. Stainless steel parts are used where necessary on moving parts to prevent seizure during a fire.
The dampers may be duct-connected or wall-mounted. For a smoke lobby, the smoke damper may be mounted to a metal grille for smoke-extract function. The dampers have been tested to 250˚C for 2 hours according to Underwriters’ Laboratory Standard UL555s. (Left: SD18 undergoing testing.)


OLS SMOKE DAMPERS
are used in engineered smoke control systems to evacuate toxic gases from the fire floor and prevent the spread of these gases to non-fire floors.


Features
• Robust construction
• Stainless steel blade-edge and jamb seals ensure low leakage – less than 0.5% based on approach velocity of 10 m/s
• Withstand pressure of 2000 Pa
• Low pressure loss – less than 30 Pa at 10 m/s air velocity
• Withstand continuous temperature of 250˚C for 2 hours
• Fast cycle time - less than 20s for electric and 10s for pneumatic operated damper
• Dampers may be integrated into the “fire Control Strategy” and the plant control system
• Provide monitoring of damper position
• Damper reliability proven by testing to Underwriters’ Laboratory Standard UL555s

Performance
OLS smoke dampers were subjected to a series of tests according to UL555s for its heat resistance and aerodynamic performance. The air leakage and pressure loss properties of the smoke dampers were determined by tests after the smoke dampers have undergone the 250˚C heat resistance test for a period of 2 hours. Subsequently the smoke dampers were subjected to an operation test which determined the dampers' operating torque for pressure of 2000 Pa. The tests clearly demonstrated the reliability of OLS smoke dampers.


Download SD18 & SD20 catalog (Adobe PDF, 3.4 MB)

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