Q:At least 2 years old, because I am doing the project, you can need a large number of purchases. Others say the Internet is cheaper, but not kind, afraid of poor quality. We recommend to me.

The key is the frequency of use of the janitor

Q:Is it hydraulic? Inside a lot of oil ah?

Is to rely on the hydraulic buffer to form a damping, in the open door when the hydraulic oil compression, the door after the opening of the hydraulic oil to release energy to close the door energy, and then through the above two screws to adjust the first paragraph and the second paragraph of the closed door speed, to achieve satisfaction The closing speed.

Q:How to adjust the door closing force

Adjustment methods and precautions: see pictures in the picture, generally in the side of the door closer to the side of the regulation of the valve is marked 1.2, speed 1 block is to adjust the door opening angle from 90 degrees to 20 degrees between the closing speed, speed 2 Block is to adjust the door opening angle from 20 degrees to 0 degrees that is the door completely closed the speed of the trip. Adjust the valve if the screw tightening (clockwise adjustment) is to slow down the speed, that is, closing the door close the door to adjust the power. If the valve screw loose (counterclockwise adjustment) is the speed becomes faster, that is, increase the closing door closing force. Adjust the amplitude must be controlled in a small range, and each adjustment are tested door fan strength is appropriate, if the amplitude is too large may screw off, resulting in door closers oil spill.

Q:How closed the door closers

Adjust the tightening of the door closer is to adjust the closing speed, the strength of the fast when the speed is small, the door is close to the door close to the slow speed. Door closers to adjust the closing speed is through the two hydraulic valve independent control of two door closers closing speed for full hydraulic control. Adjustment method and precautions: (1) generally in the side of the door closer to the side of the adjustment valve is marked 1.2, speed 1 block is to adjust the door opening angle from 90 degrees to 20 degrees between the closing speed, speed 2 is to adjust the door opening angle from 20 Degrees to 0 degrees is the door completely closed the speed of the trip. (2) When adjusting the valve screw tightening (clockwise adjustment) is to slow down the speed, that is, the door closer to the door to adjust the power. (3) If the valve screw loose (counter-clockwise adjustment) is the speed becomes faster, that is, increase the closing door closing force. Adjust the amplitude must be controlled in a small range, and each adjustment are tested door fan strength is appropriate, if the amplitude is too large may screw off, resulting in door closers oil spill.

Q:How much is the cheapest door closer?

Well-known domestic brands - Branch guide, her a small door closet KE-151 is relatively cheap, and ? 40. Branch guide the door closer, good quality, stable performance, sold overseas, so the cheapest door closet is certainly less than ? 40. Hope to help some.

Q:Do the door closers have automatic stop function?

1, the door closers are not automatically shut the door function. With the positioning or stop function of the door closer prices generally higher than the usual price of about 30%. 2, the door closer is a spring similar to the spring, when the door can be opened after the release of compression, the door automatically shut, like the role of the spring door, you can ensure that the door is opened, accurate and timely closed to initial position. 3, behind closed doors are mainly used in commercial and public buildings, but there are also used in the home situation. They have many uses, the most important of which is to make the door closed by itself, to limit the spread of fire and ventilation within the building.

Q:Just bought back, do not know why the rotation of the axis does not move ... no way to install

You first use a screwdriver to adjust the valve on the door above the valve to see if you can turn

Q:Do not close the door closer?

There is a small mouth on the right side of the door closer, there are screws, that is, tight tone. There are two valves next to the door closer to the speed but can not adjust the weight. The choice of the door closers is too heavy.

Q:How can we install a door closet

1, the standard installation: door closers installed on the door, the bearings installed in the door frame, and the door closet installed in the sliding door side. This installation is suitable for the door frame is narrow, there is not enough space to install the door closer. Applicable to the direction of the door without obstacles, the door open to a large enough angle, the door closers will not hit the foreign objects. 2, the door frame installation: door closet installed in the door frame, the seat installed in the door, and the door closet installed in the door side. This installation method is suitable for wide door frame, there is enough space to install the door closer. Compared with the standard installation, this installation method is suitable for opening doors such as walls and other obstacles. This type of installation has a greater closing force and is suitable for larger and heavier doors.

Q:How to choose the door closers

Select the door closers should consider the factors are: the weight of the door, the width of the door, the door frequency and the use of requirements and the use of the environment. The weight of the door and the width of the door is the most important factor in choosing the door closer model, common doors are fire doors, wooden doors, aluminum doors, glass doors, steel doors and so on. Usually the weight of the door is small, select the smaller model, and vice versa.