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F39-EJ1655-D application field and working principle

F39-EJ1655-D, belonging to the accessories category, is a heavy-duty door closer for commercial and industrial indoor settings. It has a modern design and is constructed of long-lasting,heavy-duty steel components. Since it is a hydraulic door closer, it provides for a slow, controlled closing of the door and has adjustable control over the speed and closing force.The main application of the F39-EJ1655-D is to control the speed of a door\'s opening and closing. It has a variety of settings that allow for the user to adjust the speed, as well as the closing force. Depending on the model, the closer has adjustable valves to control the speed, keeping the door from slamming shut. Other adjustable features include the backcheck valve, which prevents the door from over-extending and ensures that the door can close without taking too much force. By adjusting the spring strength, the closer can also be set to provide different closing forces depending on the size and weight of the door.In order to use the F39-EJ1655-D, it must first be installed onto a door frame. After the mounting brackets are secured to the door frame, the closer is attached to them, and the pin must be adjusted for the proper speed and closing force. Once the closer is installed, the adjustable valves can be used to set the appropriate speed and closing force, and the door can then be operated safely.The working principle of the F39-EJ1655-D is to use internal hydraulic pressure in order to balance the force of the door as it closes. Inside the closer, there are two cylinders filled with oil and a floating valve. As the door is opened, the valve is pushed down and is filled with oil. This applies pressure to the piston, which in turn moves the arm of the closer. When the door is released, the action of the oil releases the pressure on the piston, allowing the door to close at a regulated speed. This principle of operation provides for the controlled speed and closing force of the F39-EJ1655-D, allowing the door to close quietly and safely.Overall, the F39-EJ1655-D is a durable and reliable door closer that provides for a slow, controlled closing of the door. It is adjustable for different weights and sizes, allowing for the user to customize the speed and closing force as needed. With its reliable operation and modern design, the F39-EJ1655-D is an ideal choice for commercial and industrial applications.

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