Norton Rixson L27 Series 3/4" Offset Extra Heavy Duty Floor Closer for Lead-Lined Doors up to 1500 lbs

Norton Rixson L27 Series 3/4" Offset Extra Heavy Duty Floor Closer for Lead-Lined Doors up to 1500 lbs

Professional Floor Closer Solution for Heavy-Duty Lead-Lined Door Applications

The Norton Rixson L27 Series floor closer delivers exceptional performance for lead-lined interior or exterior doors weighing up to 1500 lbs. This 3/4" offset-hung floor closer features heavy-duty construction with cast iron cement case and is designed for high traffic applications requiring precise door control. ANSI/BHMA A156.4 Grade 1 certified with built-in positive dead stop available at 85°, 90°, 95° or 105° opening degrees.

Professional Features & Benefits

• Heavy-Duty Weight Capacity: Supports doors up to 1500 lbs with specialized design for lead-lined door applications requiring extra structural support.
• 3/4" Offset Design: Offset-hung configuration accommodates 1-3/4" thick doors with screw holes strategically spaced to straddle lead lining for secure mounting.
• Built-in Positive Dead Stop: Prevents doors from swinging beyond desired opening degree with options for 85°, 90°, 95° or 105° stops for precise control.
• Cast Iron Construction: Heavy-duty cast iron cement case with robust internal components and hardened one-piece steel spindle for long-term reliability in demanding applications.
• Multiple Valve Control: Separate independent valves for closing speed, latch speed, and backcheck provide precision adjustment and enhanced operational control.
• ANSI/BHMA Grade 1 Certification: Meets ANSI/BHMA A156.4 Grade 1 standards for commercial-grade performance and reliability.
• Compatible Components: Includes L180 top pivot with ML19 intermediate pivots required for doors 60" to 90" in height (order separately).
• 10-Year Limited Warranty: Comprehensive warranty coverage provides long-term protection and confidence in product performance.

Technical Specifications

• ANSI/BHMA: ANSI/BHMA A156.4, Grade 1
• Commercial/Residential: Commercial
• Cover Type: Cast iron cement case
• Delay Function: Yes
• Department: Door Hardware
• Door Swing: Single Acting
• Door Weight: 1500 lbs.
• Duty Level: Heavy Duty
• Features: Lead Lined
• Grade: Grade 1
• Hang Type: Offset Hung
• Hold Open Feature: No
• Mounting Method: Offset
• Product Category: Door Controls
• Product Group: Door Controls
• Product Model: L27N
• Product Subgroup: Door Closers - Floor
• Product Type: Floor Door Closers
• Series: L27 Series
• Subcategory: Floor Closers
• Warranty: 10 Year Limited

Installation & Operation

1. Review manufacturer specifications and verify door preparation requirements including door thickness, weight capacity, and lead lining considerations specific to this heavy-duty application.
2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and floor surfaces, ensuring proper alignment with lead lining structure.
3. Prepare door and floor by drilling required holes and routing as specified in manufacturer instructions, taking care to maintain structural integrity of lead-lined door construction.
4. Install L180 top pivot and any required ML19 intermediate pivots per manufacturer specifications for door height and weight requirements.
5. Mount floor closer unit and secure all mounting hardware per manufacturer torque specifications, ensuring proper load distribution for 1500 lb capacity.
6. Adjust closing speed, latch speed, and backcheck valves for optimal operation, and set positive dead stop to desired opening degree (85°, 90°, 95° or 105°).
7. Test device operation under full door weight to verify proper function and make final adjustments as needed. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

• Healthcare Facilities with Lead-Lined Radiation Protection Doors
• Medical Imaging Centers and X-Ray Rooms
• Industrial Facilities with Heavy Security Doors
• Government and Defense Buildings
• Research Laboratories and Clean Rooms
• High-Security Commercial Buildings
• Specialized Manufacturing Facilities

Why Choose Norton Rixson Quality?

Norton Rixson L27 Series floor closers deliver professional-grade reliability with heavy-duty cast iron construction and hardened steel components rated for doors up to 1500 lbs. The 10-year limited warranty and ANSI/BHMA Grade 1 certification demonstrate the manufacturer's commitment to quality and performance. Engineered specifically for demanding lead-lined door applications where dependable operation and structural integrity are essential.