足球彩票

Fire damper
  • Shanghai Fan Manufacturer
  • Source: 5280tv.com
  • Views: 1,169 views
  • 防火阀

    Overview of fire dampers:

    Fire damper is a normally closed valve. It is opened by the control center through 24V DC power or manually. It is automatically closed at 280 ° C. The reset must be manual.

    Working principle and function of fire damper:

    When the temperature of the flue gas reaches 280 ° C, people have basically been evacuated, and the exhaust of smoke has no practical significance. At this time, there is a fire in the flue gas, and the valve is automatically closed to avoid the fire spreading. The smoke exhaust vent of the system can also use a normally closed fire exhaust vent, eliminating the smoke exhaust fire valve on the branch pipe. During a fire, the air vent is opened by the control center through 24V DC power or manually. When the smoke temperature reaches 280 ° C, the air vent is automatically closed. The reset must also be performed manually. The smoke exhaust fan room entrance should also be installed with a smoke exhaust fire valve to spread to the floor of the fan room with fire prevention potential.

    Common map of fire valve models:

    防火阀

    Shanghai Huihong fan fire valve advantages:

    1.High temperature resistant carbon steel material

    It is suitable for important buildings with gas automatic fire extinguishing devices and places where ventilation and air-conditioning pipes cannot be reset manually.

    2.Excellent performance

    The test meets the requirements of fire protection, can run under high temperature conditions, and has good high temperature resistance;

    3.Smart and convenient to use

    The valve can be reset to the open state by DC24V power supply, five-speed adjustment, output valve closing signal, and can interlock other fire prevention equipment;

    4.Easy installation

    Usually installed on the air duct of a ventilation and air-conditioning system that needs to adjust the volume of air or close the door with an electrical signal. It is suitable for horizontal or vertical air ducts.