Norton Rixson 7500 Series Institutional Surface Door Closer — Tri-Pack Configuration
The Norton Rixson 7500 Series is a heavy-duty, multi-sized surface closer engineered for long-term reliability in demanding institutional and commercial environments. The tri-pack configuration ships with hardware for regular, parallel, and top jamb mounting in a single package — one SKU covers the three most common installation conditions. The cast aluminum body, 1-1/2" (38mm) diameter piston, and adjustable spring sizes 1–6 handle doors up to 250 lbs, and the unit is independently tested to exceed 25 million cycles.
Key Features
- Tri-Pack Configuration: Regular, parallel, and top jamb arm mounting hardware included — no separate arm kit required.
- 25+ Million Cycle Rating: Exceeds ANSI/BHMA A156.4 Grade 1 requirements for high-traffic institutional applications.
- Cast Aluminum Body: 1-1/2" (38mm) diameter piston for superior strength and consistent hydraulic performance.
- Adjustable Spring Sizes 1–6: Accommodates doors up to 250 lbs with field-adjustable closing force.
- Independent Valve System: Separate latch, sweep, and backcheck valves with staked construction to prevent accidental adjustment.
- Low Profile: 2-1/8" projection for a clean architectural appearance.
- Non-Handed: Suitable for interior or exterior doors; 180° swing capability where conditions permit.
- Hold Open Available: Select variants include hold-open arm; delayed action also available.
- 25-Year Limited Warranty.
Technical Specifications
- ANSI/BHMA: A156.4, Grade 1
- Duty Level: Heavy Duty
- Application: Commercial
- Door Weight Capacity: 250 lbs.
- Spring Type: Adjustable Size (1–6)
- Cover Type: Plastic/Metal
- Hold Open Feature: Yes (on applicable variants)
- Warranty: 25 Year Limited
Installation Overview
- Verify door weight, thickness, and mounting surface suitability against manufacturer specifications.
- Select mounting configuration from the tri-pack: regular arm, parallel arm, or top jamb, based on door swing and architectural constraints.
- Use manufacturer-provided templates to mark mounting hole locations on door and frame.
- Drill required holes per manufacturer specifications and install closer body and arm assembly to specified torque.
- Adjust spring size (1–6) and set latch, sweep, and backcheck valves for desired door operation and ADA compliance.
- Test through full swing range; verify closing speed, latching force, and backcheck. Refer to the included installation instructions for complete procedures.
Typical Applications
- Institutional facilities: schools, hospitals, government buildings
- Commercial office and multi-tenant residential
- High-traffic interior and exterior doors requiring Grade 1 performance
- Retrofit applications — adapter plates available for LCN 4010, LCN 4040, and Rixson M2020 footprints
Manufacturer Resources
Product Specs
- Series:
- 7500 Series
- Duty Level:
- Heavy Duty
- Spring Type:
- Adjustable Size
- Grade:
- Grade 1
- Warranty:
- 25 Year Limited
- ANSI/BHMA:
- ANSI/BHMA A156.4, Grade 1
- Product Group:
- Door Controls
- Product Subgroup:
- Door Closers - Surface Mounted
- Product Type:
- Surface Mounted Door Closers
- Subcategory:
- Surface Closers
- Door Weight:
- 250 lbs.
- Commercial/Residential:
- Commercial
- Cover Type:
- Plastic/Metal
- Hold Open Feature:
- Yes
- Product Category:
- Door Controls
- Department:
- Door Hardware
Parts & Accessories