Universal Automatic Door Closer

Product Description

A universal automatic door closer is a hydraulic device. It is designed to automatically close a door after it has been opened, ensuring safety, security, and energy efficiency in residential, commercial, and institutional settings.

This surface-mounted door closer is a self-contained mechanical unit filled with hydraulic fluid. It controls the speed and force of the door’s closing action, preventing slamming and ensuring a gentle, controlled closure every time.

This universal door closer is designed to fit most standard doors. It is available with adjustable closing speeds, making it suitable for a wide range of applications from home entry doors to high-traffic commercial entrances.

The universal fit eliminates the need for complex door modifications or specialised hardware. This makes it an ideal solution for contractors, property managers, and DIY enthusiasts.

How Does a Universal Door Closer Work?

A common question concerns its operation and adjustability.

Universal Automatic Door Closer

A universal door closer uses a spring-loaded hydraulic mechanism that is activated when the door is opened. The opening action compresses a spring and forces hydraulic fluid through a precision valve. When the door is released, the spring pushes the fluid back, driving a rack-and-pinion mechanism that rotates the spindle and closes the door at a controlled speed.

Most universal automatic door closers feature adjustable valves. These allow you to fine-tune the closing speed and the final latching speed, ensuring the door closes firmly without slamming. These adjustments are typically accessible via a hex key or screwdriver, making it simple to customise the door’s operation.

What Are the Key Specifications?

The closing force is rated EN 3 to EN 6 and adjustable. Suitable door width is up to 1,400 mm. Suitable door weight is up to 120 kg.

Material is steel or aluminium body with a hydraulic mechanism. Finish is silver or anodised, white, dark bronze, or black. Mounting type is surface mount on the pull side or push side.

Adjustability includes closing speed, latching speed, and backcheck on select models. Warranty is 1 year to 5 years depending on the model. Standards compliance is EN 1154.

What Are the Different Types of Surface Door Closers?

The term “universal” often refers to a surface-mounted closer that is non-handed and fits both left and right-hand doors.

Standard hydraulic closers are the most common type. They feature a rack-and-pinion mechanism and adjustable speed controls, suitable for general residential and light commercial use.

Heavy-duty closers are rated EN 5 to 7. They are designed for high-traffic commercial doors, fire doors, and heavy doors, offering a higher closing force for larger and heavier door panels.

Concealed closers are mounted within the door or frame for a completely hidden appearance. They are available in overhead or jamb-mounted configurations.

Hold-open closers feature a mechanical or electromagnetic hold-open arm. They keep the door open at a set angle, releasing when a slight pull or fire alarm is triggered.

Low-profile closers have a compact design with a slimmer body. They offer a more discreet appearance while maintaining full hydraulic functionality.

Fire door closers are specifically tested and certified for use on fire-rated doors. They ensure the door closes automatically in the event of a fire to contain flames and smoke.

How Do You Choose the Right EN Rating?

The EN rating determines the closing force and the maximum door size the closer can handle.

Universal Automatic Door Closer

EN 3 is suitable for doors up to 850 mm standard or 750 mm heavy. It is best for light interior doors and small rooms.

EN 4 is suitable for doors up to 1,100 mm standard or 950 mm heavy. It is best for standard interior and exterior doors.

EN 5 is suitable for doors up to 1,250 mm standard or 1,100 mm heavy. It is best for main entrances and heavier doors.

EN 6 is suitable for doors up to 1,400 mm standard or 1,250 mm heavy. It is best for heavy doors and high-traffic entrances.

How Do You Install a Universal Surface Door Closer?

Proper installation is critical for correct operation and safety. Most universal door closers include a template and installation instructions.

Regular mount means the closer is mounted on the door, with the arm attached to the frame. This is the most common installation for interior doors.

Parallel arm mount means the closer is mounted on the door, with the arm attached to a bracket on the frame. This is often used where the door opens towards the closer or where aesthetics require the closer to be less visible.

Top jamb mount means the closer is mounted on the frame header, with the arm attached to the door. This is useful for glass doors or situations where mounting on the door leaf is not possible.

What Adjustments Can You Make on a Universal Door Closer?

Most universal door closers have two or three adjustable valves.

Closing speed controls the main closing speed from approximately 180° to 15°. Adjust this first to ensure the door closes smoothly.

Latching speed controls the final few degrees to ensure the latch engages firmly. This is adjusted separately to ensure the door latches properly without slamming.

Backcheck controls the resistance when the door is opened past 80°. This prevents the door from hitting the wall too hard.

Some advanced models feature a closing delay or delayed action setting. This keeps the door open for an extended time before closing, which is helpful for elderly or disabled users.

Where Should You Use a Universal Door Closer?

Universal automatic door closers are suitable for numerous applications.

For residential use, they are suitable for front doors, back doors, garage entry doors, and fire doors. For commercial use, they are suitable for office doors, shop entrances, restaurant kitchen doors, and hotel room doors.

For public buildings, they are suitable for schools, hospitals, government buildings, and libraries. For industrial use, they are suitable for factory entrances, warehouse doors, and cleanroom access points.

For fire-rated doors, they ensure compliance with fire safety regulations.

What Are the Benefits of an Adjustable Door Closer?

Safety prevents doors from slamming shut, reducing the risk of injury, especially for children and elderly users. Energy efficiency reduces heat loss by ensuring doors close fully, saving on heating and cooling costs.

Security automatically locks doors if a lock is fitted, ensuring the building is secured. Fire safety ensures fire doors close automatically to contain smoke and fire, meeting building code requirements.

Accessibility helps meet ADA and Building Code requirements for automatic door closing.

What Certifications Should You Look For?

When selecting a door closer, particularly for commercial or fire-rated applications, look for these certifications.

EN 1154 is the European standard for building hardware, covering requirements for door closers and their performance. UL 10C is the US standard for fire door assemblies, indicating the closer has been tested for use on fire doors.

ANSI and BHMA A156.4 is the US standard for door closers, with Grade 1 being the highest durability rating.