Fire Damper
Fire dampers are passive fire protection products used in heating, ventilation, and air conditioning (HVAC) ducts to prevent the spread of fire inside the ductwork through fire-resistance rated walls and floors. Fire/Smoke dampers are similar to Fire Dampers in fire resistance rating, and also prevent the spread of smoke inside the ducts. When a rise in temperature occurs, the fire damper closes, usually activated by a thermal element which melts at temperatures higher than ambient but low enough to indicate the presence of a fire, allowing springs to close the damper blades. Fire dampers can also close following receipt of an electrical signal from a fire alarm system utilizing detectors remote from the damper, indicating the sensing of heat or smoke in the building occupied spaces or in the HVAC duct system.
Regulations and fire test regimes vary from one country to another, which can result in different designs and applications.
Read more about Fire Damper: Fire Damper Inspection
Famous quotes containing the words fire and/or damper:
“And new Philosophy calls all in doubt,
The element of fire is quite put out;
The Sun is lost, and th’earth, and no mans wit
Can well direct him where to look for it.”
—John Donne (c. 1572–1631)
“The shy man does have some slight revenge upon society for the torture it inflicts upon him. He is able, to a certain extent, to communicate his misery. He frightens other people as much as they frighten him. He acts like a damper upon the whole room, and the most jovial spirits become, in his presence, depressed and nervous.”
—Jerome K. Jerome (1859–1927)