Eaton Crouse-Hinds 4" Rigid/IMC Compression Coupling, Malleable Iron

Eaton Crouse-Hinds 4" Rigid/IMC Compression Coupling, Malleable Iron

Professional-Grade Conduit Connection with Superior Malleable Iron Construction

The Eaton Crouse-Hinds CPR Series 4" Compression Coupling is a premium malleable iron fitting engineered for reliable rigid and IMC conduit connections. This professional-grade compression coupling delivers superior strength and long-term durability for commercial and industrial electrical installations where performance cannot be compromised.

Key Features & Benefits

Superior Material Construction

• Malleable Iron Construction - Provides exceptional strength that exceeds steel alternatives, ensuring reliable performance under mechanical stress
• Precision Manufacturing - Engineered to exact tolerances for consistent fit and optimal electrical continuity
• Corrosion Resistance - Advanced finish protects against environmental factors in demanding installations
• Professional-Grade Quality - Built to withstand decades of service in commercial and industrial environments

Installation Efficiency

• Compression Design - Provides secure, reliable connection without threading requirements
• Universal Compatibility - Works with both rigid steel and IMC conduit systems
• Contractor-Friendly Installation - Reduces installation time while ensuring code-compliant connections
• Grounding Continuity - Maintains excellent electrical continuity throughout the conduit system

Code Compliance & Safety

• NEC/CEC Compliant - Meets all applicable electrical code requirements for conduit fittings
• Ordinary Location Rated - Approved for standard commercial and industrial electrical applications
• Professional Standards - Manufactured to exceed industry standards for electrical fittings

Technical Specifications

This 4-inch trade size compression coupling features robust malleable iron construction with precision-engineered compression mechanisms. The fitting accommodates both rigid steel conduit and intermediate metal conduit (IMC) systems, providing versatile installation options. With overall dimensions of 5.31 inches in length, width, and height, and weighing 4.4 pounds, this coupling delivers substantial mechanical strength. The malleable iron material provides superior impact resistance and longevity compared to standard steel alternatives, making it ideal for high-stress installations.

Installation Process

1. Verify conduit ends are cut square and deburred to ensure proper seating
2. Insert first conduit section into coupling until it reaches the internal stop
3. Tighten compression mechanism to manufacturer's specified torque requirements
4. Insert second conduit section and align properly within the coupling body
5. Apply final compression torque to secure both conduit sections
6. Verify mechanical integrity and electrical continuity of the completed connection

Applications

Perfect for:

• Commercial Buildings - Office complexes, retail centers, hospitals, and educational facilities
• Industrial Facilities - Manufacturing plants, processing facilities, and heavy industrial installations
• Infrastructure Projects - Municipal buildings, government facilities, and public works installations
• Equipment Connections - Motor control centers, switchgear, and electrical distribution panels
• Conduit Extensions - Joining conduit runs in renovation and expansion projects
• Maintenance Applications - Repair and replacement of existing conduit systems
• High-Stress Environments - Areas subject to vibration, thermal cycling, or mechanical stress
• Long-Term Installations - Projects requiring decades of reliable service without maintenance

Compression Coupling System Benefits

Compression couplings offer significant advantages over threaded alternatives by eliminating the need for precise threading and reducing installation time. The compression mechanism creates a secure mechanical connection that maintains excellent electrical continuity while accommodating slight misalignments during installation. This design flexibility makes compression couplings particularly valuable in retrofit applications and tight installation spaces where threading tools may be difficult to maneuver.

Why Choose Malleable Iron Construction?

Malleable iron provides superior mechanical properties compared to standard steel, offering enhanced impact resistance and dimensional stability under stress. This material choice ensures the coupling maintains its structural integrity even in demanding industrial environments with temperature fluctuations, vibration, and mechanical stress. The result is a fitting that delivers reliable performance throughout the entire lifecycle of the electrical installation, reducing maintenance costs and ensuring consistent system reliability.