Hydraulic Door Closer are used in a wide range of applications in our lives. It is mainly used in commercial and public buildings, but also domestic applications. Its function is to keep the door closed in the event of a fire, thus preventing the spread of fire. Scientific use is the only way to ensure safety, so what are the precautions for the use of Hydraulic Door Closer ?

Modern Hydraulic Door Closer (or door closers for short) began with a patent registered by the Americans in the early twentieth century. They differ from traditional door closers by throttling the fluid in the door closer to achieve a cushioning effect. The core of the Hydraulic Door Closer design concept is to achieve control of the closing process so that the various functional indicators of the closing process can be adjusted according to human needs. So what is the working principle of Hydraulic Door Closer next I'll take a look at it?

Fire-rated openings are used to compartmentalize a building or space to prevent the spread of flame, smoke and toxic gases. The 2019 edition of NFPA 80, Standard for Fire Doors and Other Opening Protectives, establishes the criteria that fire-rated doors and frames must meet.NFPA 80 requires side hi

Door design considerations mainly as below:1, Where the building and inner door located2, Direction of the flow of people in the building3, Number of people the building expecting4, It is a fire resistant and heat insulated door Main concern points for this configuration are:1, Safety Door opening