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ASSA ABLOY DC340-D35 Surface-Mounted Hydraulic Door Closer for Heavy Traffic Applications
The ASSA ABLOY DC340-D35 is a robust, surface-mounted hydraulic door closer engineered for demanding, heavy-traffic environments. Featuring EN2-6 adjustable power, precision hydraulic controls for closing and latching speeds, back-check, and delayed action, it delivers consistent and reliable door operation. Certified to EN1154 standards, this stainless steel unit ensures optimal performance and durability for a wide range of commercial applications.
Quick Answer
The ASSA ABLOY DC340-D35 excels in providing meticulously controlled and durable door closure for heavy traffic areas through its advanced hydraulic system and adjustable EN2-6 power.
✓EN1154 Certified Hydraulic Control
✓Adjustable Power Size EN2-6 for Versatility
✓Integrated Back-Check and Delayed Action
✓Durable Stainless Steel Construction & 2 Million Cycle Rating
✓Non-Handed Design with Articulated Arm for 180° Opening
The ASSA ABLOY DC340-D35 is a highly capable and durable surface-mounted hydraulic door closer, engineered for environments requiring precise door control and extended operational life. Its EN1154 certification, adjustable EN2-6 power, and advanced features like back-check and delayed action make it a superior choice for non-fire-rated heavy traffic applications.
✓ Who Should Buy
- •Facility managers and building owners requiring robust door control for high-traffic commercial or institutional doors (e.g., offices, schools, retail).
- •Architects and specifiers prioritizing EN1154 compliance, adjustable functionality, and long-term durability in non-fire-rated applications.
- •Installers seeking a non-handed, versatile closer compatible with a wide range of door widths and materials.
✕ Who Should Avoid
- •Projects requiring fire-rated door closers for fire compartmentation.
- •Applications where a hold-open function is legally or operationally mandated via the closer itself.
- •Budget-constrained projects where basic, non-adjustable door closure is sufficient.
Product Overview
The ASSA ABLOY DC340-D35 represents a pinnacle of surface-mounted hydraulic door closer technology, meticulously designed for sustained performance in high-usage scenarios. Its robust construction, featuring a stainless steel body and articulated arm, ensures long-term operational integrity and a cohesive aesthetic. This non-handed unit offers exceptional adaptability for both wood and metal doors, accommodating door widths up to 1400 mm. The DC340-D35 incorporates adjustable closing and latching speeds, crucial for managing the door's kinetic energy and ensuring smooth, secure closure. While not fire-rated, its EN1154 certification attests to its adherence to stringent European performance standards for durability and function, making it an ideal choice for general-purpose heavy traffic installations where precise door control is paramount.
| Brand | assa-abloy |
| Model Name | N/A |
| Category | Door Closer |
| Closer Type | surface mounted hydraulic |
| Series | DC340 |
| Model Year | N/A |
| Country Of Origin | N/A |
| Intended Use | heavy traffic doors |
| Suitable For | surface door installation |
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Engineering Analysis
The ASSA ABLOY DC340-D35 is an exemplary hydraulic door closer, engineered for precision control and longevity. Its core functionality is rooted in a highly refined hydraulic system, featuring independent adjustable valves for critical operational parameters.
1. Hydraulic Mechanics and Precision Control: The DC340-D35 employs a sophisticated hydraulic mechanism that precisely modulates door movement throughout its operational arc. Independent adjustable valves for 'closing speed control' and 'latching speed control' allow installers to fine-tune the door's momentum from its maximum opening angle (up to 180°) down to the final few degrees before closure. This prevents uncontrolled slamming, protects door hardware, and enhances user safety.
* The 'back-check' feature, an essential hydraulic damping mechanism, engages automatically when the door is opened beyond a predetermined angle. This provides resistance against aggressive opening, preventing damage to the door, frame, and adjacent walls, especially in windy conditions or areas with high pedestrian traffic.
* 'Delayed action' functionality further enhances user convenience, holding the door open at a slower, controlled rate for an extended period before the closing cycle begins. This is particularly beneficial for wheelchair users, individuals carrying objects, or in high-traffic commercial settings requiring brief, sustained open times.
2. EN1154 Compliance and Performance: Certification to EN1154 is a fundamental pillar of the DC340-D35's engineering credibility. This European standard specifies requirements for controlled door closing devices, covering aspects such as closing power, durability, efficiency, and safety. The adjustable power size range of EN2-6 (typical) signifies that the closer can be precisely configured to meet varying door sizes and weights (up to 1400 mm width with a link arm) and wind load requirements, ensuring consistent closing force across a broad application spectrum. The EN1154 certification validates its reliability and consistent performance under specified test conditions.
3. Durability and Build Quality: Constructed from stainless steel for both its body and articulated arm, the DC340-D35 exhibits exceptional resistance to corrosion and wear, suitable for demanding environments. The specified '2,000,000 cycles (approx.)' test rating underscores the robust design and material integrity, far exceeding typical operational expectations and ensuring a significantly extended service life. The unit's non-handed design simplifies specification and installation, reducing inventory complexity. While engineered for superior mechanical performance and control, it is critical to note that the DC340-D35 is *not* fire-rated. Therefore, it is unsuitable for applications where fire compartmentation compliance requires fire-rated door closers.
Technical Support & FAQs
Engineering Analysis
The ASSA ABLOY DC340-D35 is an exemplary hydraulic door closer, engineered for precision control and longevity. Its core functionality is rooted in a highly refined hydraulic system, featuring independent adjustable valves for critical operational parameters.
1. Hydraulic Mechanics and Precision Control: The DC340-D35 employs a sophisticated hydraulic mechanism that precisely modulates door movement throughout its operational arc. Independent adjustable valves for 'closing speed control' and 'latching speed control' allow installers to fine-tune the door's momentum from its maximum opening angle (up to 180°) down to the final few degrees before closure. This prevents uncontrolled slamming, protects door hardware, and enhances user safety.
* The 'back-check' feature, an essential hydraulic damping mechanism, engages automatically when the door is opened beyond a predetermined angle. This provides resistance against aggressive opening, preventing damage to the door, frame, and adjacent walls, especially in windy conditions or areas with high pedestrian traffic.
* 'Delayed action' functionality further enhances user convenience, holding the door open at a slower, controlled rate for an extended period before the closing cycle begins. This is particularly beneficial for wheelchair users, individuals carrying objects, or in high-traffic commercial settings requiring brief, sustained open times.
2. EN1154 Compliance and Performance: Certification to EN1154 is a fundamental pillar of the DC340-D35's engineering credibility. This European standard specifies requirements for controlled door closing devices, covering aspects such as closing power, durability, efficiency, and safety. The adjustable power size range of EN2-6 (typical) signifies that the closer can be precisely configured to meet varying door sizes and weights (up to 1400 mm width with a link arm) and wind load requirements, ensuring consistent closing force across a broad application spectrum. The EN1154 certification validates its reliability and consistent performance under specified test conditions.
3. Durability and Build Quality: Constructed from stainless steel for both its body and articulated arm, the DC340-D35 exhibits exceptional resistance to corrosion and wear, suitable for demanding environments. The specified '2,000,000 cycles (approx.)' test rating underscores the robust design and material integrity, far exceeding typical operational expectations and ensuring a significantly extended service life. The unit's non-handed design simplifies specification and installation, reducing inventory complexity. While engineered for superior mechanical performance and control, it is critical to note that the DC340-D35 is *not* fire-rated. Therefore, it is unsuitable for applications where fire compartmentation compliance requires fire-rated door closers.