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ASSA ABLOY DC347-D9005 Hydraulic Rack-and-Pinion Surface-Mounted Door Closer for Heavy & Fire Doors
The ASSA ABLOY DC347-D9005 is a high-performance hydraulic rack-and-pinion door closer engineered for demanding heavy and fire door applications. Certified to EN 1154 CE with a robust EN 5-7 adjustable power size, it provides precise, variable control over door closing and latching speeds.
Quick Answer
Its primary strength lies in providing robust, EN 1154 certified control and exceptional durability for wide and heavy fire-rated doors.
✓EN 1154 CE Certified for Fire Doors
✓Adjustable Power Size EN 5-7 for Heavy Doors (up to 1600mm)
✓Variable Closing & Latching Speed Control with Back-Check
✓Durable Aluminium Body with Extra Strong Link Arm
✓Surface Mounted for Versatile Installation
The ASSA ABLOY DC347-D9005 stands as a robust, technically proficient hydraulic door closer, specifically engineered for the rigorous demands of heavy and fire-rated door installations. Its EN 1154 CE certification and comprehensive adjustability ensure reliable, compliant, and precisely controlled door operation, making it a highly valuable component for critical building infrastructure.
✓ Who Should Buy
- •Facility Managers requiring EN 1154 compliant fire door control and robust performance.
- •Architects and Specifiers for heavy-duty commercial, industrial, and public sector projects.
- •Building Owners prioritizing durability, safety, and precise door management for wide or heavy doors.
- •Maintenance teams seeking reliable, adjustable door closer solutions for high-traffic environments.
✕ Who Should Avoid
- •Residential applications with lightweight doors, where the EN 5-7 power might be excessive.
- •Installations explicitly requiring a hold-open function, as this model does not natively include it.
- •Projects with very limited overhead or side space where the 306mm body length is restrictive.
- •Budget-constrained projects for standard interior doors, as its specialized features represent a higher initial investment.
Product Overview
The ASSA ABLOY DC347-D9005 represents a pinnacle in hydraulic door closer technology, meticulously engineered for formidable heavy and fire door installations. Constructed from robust aluminium with steel components, this surface-mounted unit features a sleek Black RAL9005 finish on both body and its extra strong link arm. It accommodates doors up to 1600 mm wide, offering an adjustable power size from EN 5 to EN 7, ensuring suitability for a broad spectrum of heavy applications. Full compliance with EN 1154 CE standards underscores its fire-rated capability. Users benefit from precise control over variable closing speed, latching speed, and an integrated back-check function, all manageable via accessible adjustable valves. Designed for both left and right-handed doors, its compact dimensions (L: 306, W: 64.5, H: 69 mm) belie its significant net weight of 2.2 kg, indicating a substantial build quality. All required hardware is included for straightforward installation.
| Brand | assa-abloy |
| Model Name | N/A |
| Category | Door Closer |
| Closer Type | hydraulic-rack-and-pinion |
| Series | DC347 |
| Model Year | N/A |
| Country Of Origin | N/A |
| Intended Use | Heavy door applications |
| Suitable For | Fire and heavy doors |
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Engineering Analysis
The ASSA ABLOY DC347-D9005 hydraulic rack-and-pinion door closer is an exemplary demonstration of advanced mechanical engineering for superior door control. Its core functionality relies on a sealed hydraulic system where an internal rack, engaged by the door's opening motion, compresses hydraulic fluid. Upon release, the precise metering of this fluid through a series of adjustable valves dictates the door's closing kinetics. This mechanism ensures consistent, controlled deceleration throughout the door's travel.
The EN 1154 CE certification is paramount, signifying rigorous testing and compliance with European standards for controlled door closing devices. This standard mandates performance criteria related to closing force (power size EN 5-7), durability, safety, and fire resistance. For the DC347-D9005, this translates into guaranteed operational integrity on fire doors, where controlled closure is critical for compartmentation and life safety. The robust aluminium body and extra strong steel link arm are designed to maintain structural stability and component integrity even under the thermal stress of a fire event, preventing premature failure.
Door control precision is achieved through independently adjustable variable closing speed and variable latching speed valves. This allows installers to fine-tune the door's movement from the maximum 180-degree opening down to the fully closed position, preventing slamming and ensuring effective latch engagement. The integrated back-check feature provides crucial hydraulic cushioning when the door is opened forcefully beyond a certain point, protecting both the door and surrounding structure from damage. This combination of controlled force, adjustable speeds, and back-check positions the DC347-D9005 as a highly reliable and adaptable solution for heavy door applications requiring unwavering performance and certified compliance.
Technical Support & FAQs
Engineering Analysis
The ASSA ABLOY DC347-D9005 hydraulic rack-and-pinion door closer is an exemplary demonstration of advanced mechanical engineering for superior door control. Its core functionality relies on a sealed hydraulic system where an internal rack, engaged by the door's opening motion, compresses hydraulic fluid. Upon release, the precise metering of this fluid through a series of adjustable valves dictates the door's closing kinetics. This mechanism ensures consistent, controlled deceleration throughout the door's travel.
The EN 1154 CE certification is paramount, signifying rigorous testing and compliance with European standards for controlled door closing devices. This standard mandates performance criteria related to closing force (power size EN 5-7), durability, safety, and fire resistance. For the DC347-D9005, this translates into guaranteed operational integrity on fire doors, where controlled closure is critical for compartmentation and life safety. The robust aluminium body and extra strong steel link arm are designed to maintain structural stability and component integrity even under the thermal stress of a fire event, preventing premature failure.
Door control precision is achieved through independently adjustable variable closing speed and variable latching speed valves. This allows installers to fine-tune the door's movement from the maximum 180-degree opening down to the fully closed position, preventing slamming and ensuring effective latch engagement. The integrated back-check feature provides crucial hydraulic cushioning when the door is opened forcefully beyond a certain point, protecting both the door and surrounding structure from damage. This combination of controlled force, adjustable speeds, and back-check positions the DC347-D9005 as a highly reliable and adaptable solution for heavy door applications requiring unwavering performance and certified compliance.