Fire doors are the kind of products we see everywhere in hospitals and shopping malls. When it comes to this, we must mention fire door closers. What is the fire door closer ? Today we understand the following by introducing the following!
What is a fire door closer
Installed in the upper part of the hinged door leaf or built in the door leaf, one-way open the door, usually using the temperature of -20 ~ 200 °C, by the combination of metal spring, hydraulic damping device. Selection should be based on the door width and weight, fire limits, frequency of use and other requirements.
Fire door closers
When purchasing a fire door closer, the purchaser or consumer must first check whether the door closer meets the requirements of GB9305-88 and GA93-1995 Fire Door Closer Test. Second, according to the weight of the door, the width of the door, open the door frequency and the use of the environment and requirements, etc., targeted selection of door closers. In general, the weight and width of the door are the main factors in selecting the model of the door closer. When the weight of the door is small, the model with the smaller power is selected and vice versa. The frequency of door opening is closely related to the product quality. For frequently used occasions, the door closer with good sealing performance and long life should be selected.
Fire door closers use matters needing attention
1. Whether it is necessary to open the door after the automatic stop function.
2. Damping and buffering function - quick damping and buffering when the door is opened to a certain position, and the damping force and range of the damping can be adjusted according to the use requirements; this function is used to prevent the door or lock from hitting the wall when the door is opened quickly, or emergency escape. It prevents people from falling to the ground when they lose weight when they open the door quickly.
3, slow closing time delay - the door from the maximum position of the door to start the slow closing slowly, can be adjusted according to the requirements of stepless. It is suitable for use in places where access is frequent and crowded, especially in hospitals, where there are gates and access for the elderly, children and disabled people.
4. The closing force can be adjusted - it can be used on doors with different door weights and door widths, as well as places with large door closing resistance due to environmental reasons. Random and stepless adjustments can be used to obtain satisfactory closing forces, especially in places where coastal cities, vehicles and ships are affected by the wind and the door closing resistance (the force of the door) changes from time to time.
5. Damping reset function Temporary closing performance (vertical door closer) - When opening any angle, closing the speed control valve should temporarily suspend the damping reset function.
6. Safe and fast over-damping closing performance (vertical door closer) - The sudden application of external force during closing any angle should be able to safely and quickly close.
7, use of the environment: fire protection requirements and antifreeze requirements in winter under minus 35 °.
Regarding the fire door closers , I will introduce them to you here. I hope to help you, and I would like to look forward to seeing more information on this site.
Fire Door Closer Steel Fire Door Closer B Fire Door Closer Floor Spring
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