Door closer is a universal mechanism to ensure a smooth and quiet closing of doors. Door closers can be installed on different doors – entrance and interior, glass and wood, plastic and metal, single and double, swing and a one-sided opening. Despite the fact that closers door, as a rule, are not managed devices to be installed on doors, managed access control, as they provide a guaranteed closing the door and trigger lock, which influences the efficiency of the access control system as a whole. How it works: The basis of the most simple finisher (Hydro) laid a spring placed in a metal case filled with special oil. To ensure smooth progress and delay closing the door closer uses the principle of the hydraulic Damping: it converts the torque is mechanically attached to the door opening, at the time of closing. What you need to know to choose the right door closer: 1.

Weight of the door, the width of the door leaf: The main parameter finisher is the force of closing the door or door closer power. The heavier the door wider and the door leaf, the stronger should be closer. Efforts, which should develop closer for closing the door, normalized to the European standard EN 1154. This standard defines the closers for 7 classes (from EN1 to EN7). At the same door closers class 1 (EN1) is designed for light and narrow doors and closers Grade 7 (EN7) – for large and heavy. For ordinary exterior and interior doors applied, as a rule, closers 3-5 classes.