It is installed on the upper part of the side hung door leaf and opens the door in one direction. Usually, it uses a device with a temperature of - 15~40 ℃ and a combination of metal spring and hydraulic damping.The selection shall be based on the width and weight of the door leaf, the frequency of use and other requirements.
Door closers Modern hydraulic door closers (referred to as door closers) began as a patent registered by Americans in the early 20th century. It is different from the traditional door closers. It achieves buffering effect by throttling the liquid in the door closers.The core of the design idea of the hydraulic door closer is to realize the control of the closing process, so that various functional indicators of the closing process can be adjusted according to human needs.The significance of the door closer is not only to automatically close the door, but also to protect the door frame and door body (smooth closing). More importantly, the door closer has become an important part of the intelligent management of modern buildings.Door closers are mainly used in commercial and public buildings, but they are also used at home.They have many uses, the most important of which is to make the door close by itself to limit the spread of fire and ventilation in the building.
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