DORMA DOOR CLOSER DS 500 YALE

The DORMA DS 500 Yale SEO is a high-performance, surface-mounted door closer that masterfully blends the renowned engineering of DORMA with the iconic, trusted design of the Yale brand. Designed for heavy-duty commercial and institutional applications, this door closer provides reliable, safe, and effortless control over door movement, ensuring longevity and safety in high-traffic environments.

Its classic “Yale” scroll design is instantly recognizable, offering a traditional aesthetic that conveys strength and reliability. The “SEO” designation indicates a Slide Track Emergency Operation mechanism, making it a crucial component for fire door assemblies where safe, rapid egress is required.

Key Features & Benefits

• Heavy-Duty Performance (EN 1-4): Built to withstand the rigors of high-frequency use in schools, hospitals, office buildings, and public facilities. It is certified to power sizes 1 through 4 of the European EN 1154 standard, allowing it to handle a wide range of door weights and sizes.

• Slide Track Emergency Operation (SEO): This critical safety feature allows for a reduced opening force when the door is pushed open. In an emergency, occupants can open the door with minimal effort, facilitating swift and safe evacuation, while the closer maintains full control over closing and latching.

• Dual-Purpose Mounting: Offers versatile installation options. It can be mounted in the Regular Pull configuration (closer on the pull side of the door) or Parallel Arm configuration (closer on the push side, arm parallel to the door), providing flexibility for various door and frame setups.

• Fully Adjustable Hydraulic Control: Features precise, independent valves for adjusting:

  • Sweep Speed: The main closing power from the open position to approximately 15°.

  • Latching Speed: The final closing action from 15° to the closed position.

  • Back-Check: A hydraulic cushion that protects the door and the closer from being thrown open violently against its stop.

  • Delayed Action: An optional setting that holds the door open for a longer period before initiating the sweep speed, ideal for moving equipment or groups of people.

• Durable & Corrosion-Resistant Finish: The body is manufactured from a high-grade aluminum alloy with a durable, corrosion-resistant finish, ensuring a long service life and maintaining its appearance over time. The classic Yale scroll cover is available in a range of finishes to complement any door hardware aesthetic.

• Hold-Open Option: Can be specified with an optional Delayed Action Hold-Open feature, which holds the door open for a set period (adjustable) before automatically closing. This is not a dedicated hold-open for ventilation but is useful for temporary passage.

Technical Specifications

• Product Type: Surface-Mounted Door Closer

• Brand: DORMA (YALE Series)

• Model: DS 500 SEO

• Standard: Tested and certified to EN 1154

• Power Size: Adjustable from EN 1 to EN 4

• Mounting: Dual-Purpose (Regular Pull & Parallel Arm)

• Operation: Slide Track Emergency Operation (SEO)

• Finish Options: Typically available in 616 (Satin Aluminum), 701 (Satin Brass), 702 (Polished Brass), 801 (Dark Bronze), and others. (Confirm specific finishes with supplier).

• Arm Type: Standard Slide Track Arm

Ideal Applications

The DORMA DS 500 Yale SEO is the ideal choice for any commercial or public building where durability, safety, and code compliance are paramount.

• Schools & Universities

• Hospitals & Healthcare Facilities

• Office Buildings & Main Entrances

• Government & Municipal Buildings

• Hotels and Public Facilities

• Fire-Rated Door Assemblies requiring emergency egress functionality.