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Types of door closers used on hollow metal doors

Types of door closers used on hollow metal doors

Door closers are essential components of any commercial building or institution. They ensure that doors close after use, preventing drafts, noise, and intruders from entering. There are several types of door closers used on hollow metal doors, each with its unique features and benefits. In this article, we will discuss the most common types of door closers used on hollow metal doors.

1. Surface-mounted door closers

Surface-mounted door closers are the most common type of door closers used on hollow metal doors. They are installed on the surface of the door frame and the door itself. These closers are easy to install and adjust, making them an ideal choice for commercial buildings.

Surface-mounted door closers come in different sizes, ranging from light-duty to heavy-duty. Light-duty surface-mounted closers are suitable for interior doors with low traffic, while heavy-duty closers are designed for exterior doors with high traffic. Some surface-mounted door closers have a hold-open feature that allows the door to stay open at a specific angle.

2. Overhead concealed door closers

Overhead concealed door closers are installed inside the door frame and the door itself, making them invisible when the door is closed. These closers are commonly used in high-end commercial buildings, where aesthetics are essential. Overhead concealed door closers are available in different sizes and strengths to fit different door sizes and weights.

Overhead concealed door closers are more challenging to install and adjust than surface-mounted door closers. However, once installed, they provide a seamless and clean appearance. These closers are also less prone to vandalism and tampering since they are not visible.

3. Floor-spring door closers

Floor-spring door closers are installed on the floor and the bottom of the door. These closers are often used in high-end commercial buildings, such as banks, hotels, and museums. Floor-spring door closers provide a clean and unobstructed appearance since they are not visible when the door is closed.

Floor-spring door closers are suitable for doors with high traffic and heavy weights. They can also be used for doors with non-standard dimensions or shapes. However, floor-spring door closers are more challenging to install and adjust than surface-mounted door closers. They also require a specific type of floor construction to provide adequate support.

4. Electromagnetic door closers

Electromagnetic door closers are powered by electricity and use magnetic forces to control the door's closing and opening. These closers are commonly used in commercial buildings, hospitals, and schools, where accessibility is essential. Electromagnetic door closers can be programmed to provide automatic opening and closing, making them ideal for hands-free operation.

Electromagnetic door closers require a power source, which can be a challenge in some buildings. They also require special wiring and electrical installation, making them more challenging to install and adjust than other types of door closers.

5. Hydraulic door closers

Hydraulic door closers use oil or hydraulic fluid to control the door's opening and closing. These closers are commonly used in commercial buildings, schools, and hospitals, where noise reduction is essential. Hydraulic door closers provide a smooth and quiet operation, making them ideal for public buildings.

Hydraulic door closers are easy to install and adjust, and they come in different sizes and strengths to fit different door sizes and weights. However, they are more prone to leaking than other types of door closers, which can lead to maintenance issues.

In conclusion, there are several types of door closers used on hollow metal doors, each with its unique features and benefits. When choosing a door closer, it is essential to consider the door's size, weight, and traffic, as well as the aesthetics and accessibility requirements. Surface-mounted door closers are the most common type and are suitable for most commercial buildings. Overhead concealed door closers provide a seamless appearance but are more challenging to install and adjust. Floor-spring door closers provide a clean appearance but require a specific type of floor construction. Electromagnetic door closers are ideal for hands-free operation but require a power source and special electrical installation. Hydraulic door closers provide a smooth and quiet operation but are more prone to leaking. Ultimately, the choice of door closer will depend on the specific requirements of the building and the door it will be installed on.

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