Commercial Fireproof Door Closer

CE UL Automatic Swing Heavy Duty Door Closer - Model DDDC038BC

1. Product Overview

The DDDC038BC CE UL Automatic Swing Heavy Duty Door Closer by D&D HARDWARE is engineered for robust performance in commercial and residential applications. Certified to UL Listed (3 Hours Fire-Rated, File No.: R40717) and CE Certification, this closer features a Back Check function, adjustable closing & latching speed, and seamless integration with D&D’s door hardware ecosystem (including door locks, door hinges, and door handles). Ideal for doors up to 950mm wide and 40–65kg in weight, it delivers reliable, controlled door operation with heavy-duty durability.

2. CE UL Automatic Swing Heavy Duty Door Closer - Technical Specifications

• Model Number: DDDC038BC
• Brand: D&D HARDWARE
• Door Width Compatibility: 950mm
• Door Weight Capacity: 40–65kg
• Speed Control: Adjustable Closing & Latching Speed (via two separate valves)
• Function: Back Check (controls door opening speed to prevent slamming)
• Certifications: UL Listed (10C, 3 Hours Fire Rated, File No.: R40717), CE Certified
• Work Temperature: -30°C to 60°C (suitable for diverse climates)
• Installation Types: Standard, Top-Jamb, Parallel Arm (PA bracket available upon request)
• Finish Options: Gold, Brown, Antique Bronze, Light Bronze, Matt White, Silver, Dark Bronze, Matt Black, or custom

3. CE UL Automatic Swing Heavy Duty Door Closer - Product Images and Videos

4. CE UL Automatic Swing Heavy Duty Door Closer - Product Features & Advantages

• UL Listed & CE Certified: 3-hour fire protection (UL Listed, File No.: R40717) and CE compliance ensure safety and code adherence in commercial and residential buildings.
• Heavy-Duty Rack and Pinion Mechanism: Delivers robust performance for doors up to 65kg, with a high-strength cast aluminum body for durability in high-traffic environments.
• Adjustable Closing & Latching Speed: Two separate valves enable precise tuning of door closing and latching speeds, ensuring smooth, controlled operation without slamming.
• Back Check Functionality: Controls door opening speed to prevent slamming, protecting door hardware, frames, and walls from damage.
• Wide Temperature Range: Operates reliably from -30°C to 60°C, making it suitable for diverse climates and indoor/outdoor applications.
• Universal Installation: Compatible with standard, top-jamb, and parallel arm setups (PA bracket available on request), fitting various door configurations.
• Seamless D&D Hardware Integration: Works with door locks, door hinges, door stops, and door accessories to create a unified door hardware system for comprehensive building functionality.

5. CE UL Automatic Swing Heavy Duty Door Closer - Installation Steps

1. Prepare the Door & Frame: Ensure door width (≤950mm) and weight (40–65kg) match DDDC038BC specifications. Gather installation tools (drill, screwdriver, measuring tape).
2. Select Installation Type: Choose standard, top-jamb, or parallel arm installation (request PA bracket if needed) based on door/frame design.
3. Mount the Closer Body: Attach the high-strength cast aluminum closer body to the door or frame using provided hardware, aligning with door hinge and door lock components.
4. Install Arm & Linkage: Connect the rack and pinion arm to the door and closer body, adjusting linkage for proper door travel and closing force.
5. Adjust Speed Valves & Back Check: Set closing/latching speeds via the two separate valves, and calibrate Back Check to control door opening speed, testing operation for smooth movement.
6. Verify Integration: Ensure compatibility with door locks, door hinges, and door stops for seamless system performance in opening/closing cycles.

6. CE UL Automatic Swing Heavy Duty Door Closer - Application Scenarios

The DDDC038BC Heavy Duty Door Closer excels in environments requiring robust, fire-rated performance for medium-duty doors, including:

In hotels, its heavy-duty construction handles high traffic while providing fire safety, integrating with door locks for guest access control. For hospitals, Back Check prevents slamming to maintain a quiet environment, pairing with door hinges for smooth operation. In offices, adjustable speed control ensures professional, controlled door closing in conference rooms, matching door handles for a cohesive aesthetic.

7. CE UL Automatic Swing Heavy Duty Door Closer - Value for Buyers

• Fire Safety Compliance: UL 3-hour fire rating meets building codes, ensuring occupant safety and reducing liability for property owners.
• Heavy-Duty Durability: Rack and pinion mechanism with cast aluminum body resists wear and handles 40–65kg doors, lowering maintenance costs over time.
• Systematic Procurement: Integrates with D&D’s door locks, door hinges, door stops, and accessories, enabling buyers to source a complete door hardware solution from one supplier—streamlining logistics and project management.
• Damage Prevention: Back Check functionality protects door hardware and structures from slamming damage, extending asset lifespan.
• Easy Installation & Adjustment: Universal installation options and clear speed/Back Check adjustment make setup accessible for contractors, ensuring optimal performance post-installation.

8. CE UL Automatic Swing Heavy Duty Door Closer - Certifications and Compliance

The DDDC038BC Door Closer meets rigorous international standards for safety, performance, and quality:

• UL Listed (10C, 3 Hours Fire Rated): File No.: R40717—validates fire protection performance in emergency scenarios.
• CE Certification: Complies with European safety, health, and environmental protection standards.
• ISO 9001 Quality System: Produced in D&D’s ISO 9001-certified factory, with strict quality control from material sourcing to final testing.

9. CE UL Automatic Swing Heavy Duty Door Closer - Customization Options

D&D offers OEM/ODM customization for the DDDC038BC door closer to meet project-specific needs:

• Finish Customization: Select from standard finishes (Gold, Brown, Antique Bronze, etc.) or request custom colors to match door handle and architectural aesthetics.
• PA Bracket Availability: Request parallel arm (PA) brackets for unique installation requirements in specialized door setups.
• Branding: Incorporate custom logos or engravings on closer bodies for property developers or brand-specific building solutions.

10. CE UL Automatic Swing Heavy Duty Door Closer - Production Process & Quality Control

1. Material Sourcing: Procure high-quality cast aluminum and steel components, tested for strength, corrosion resistance, and fire-rated performance.
2. Precision Manufacturing: Use CNC machining to produce rack and pinion mechanisms, closer bodies, and speed valves—ensuring dimensional accuracy for UL/CE compliance.
3. Finishing & Coating: Apply selected finishes (powder coating, plating) with strict adhesion and uniformity testing to ensure aesthetic durability and corrosion resistance.
4. Assembly & Calibration: Integrate speed valves, Back Check components, and rack/pinion mechanisms, calibrating speed control and Back Check functionality for smooth, consistent door operation.
5. Quality Inspection: Each closer undergoes functional testing (speed control, Back Check, closing force, fire-rated performance) and visual inspection for defects—critical for UL/CE certification.
6. Certification Testing: Random samples are tested against UL 10C and CE standards to verify fire-rated performance and safety in emergency scenarios.
7. Packaging: Pack in protective white/color boxes or custom cartons to prevent damage during shipping, with clear labeling for easy identification in logistics.