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.
The door closer is a similar spring-like hydraulic pressure, when the door is opened after the release by compression, the door automatically shut, like the role of the spring door, you can ensure that the door is opened, accurate and timely closure to the initial position The
The door closer is a similar spring-like hydraulic pressure, when the door is opened after the release by compression, the door automatically shut, like the role of the spring door, you can ensure that the door is opened, accurate and timely closure to the initial position
