159彩票

Fire damper
  • Shanghai Fan Manufacturer
  • Source: pusuyou.com
  • Views: 1,149 views
  • 防火阀

    Overview of fire dampers:

    The 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 smoke reaches 280 ° C, the person has basically been evacuated, and the exhaust of smoke has no practical significance, and the smoke is now a fire, 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. In the event of a fire, the air vent is opened by the control center through 24V DC 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.

    Comparison chart of commonly used fire damper 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

    It is 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.