Cable Tie Tensioning Tool

DiversiTech 7-L300 Cable Tie Tensioning Tool – For Securing Duct Strap and Heavy-Duty Nylon Ties

The DiversiTech 7-L300 is a mechanical cable tie tensioning tool designed for use with high-tensile strength nylon ties during HVAC duct suspension and strapping applications. It is compatible with standard 120 to 175 lb cable ties and is engineered for securing round duct in residential and commercial air distribution systems.

This tool applies consistent tension across a range of tie diameters and cuts excess strap material once the desired tightness is achieved. Constructed for repeated jobsite use, the 7-L300 includes a built-in handle lever to simplify installation and reduce manual strain. Its 32-inch length allows for extended reach, making it suitable for overhead or recessed installations.

Key Features

• Application: For use with HVAC duct strap installations and general heavy-duty tie applications
• Cable Tie Range: Works with 120–175 lb rated nylon ties
• Duct Size Compatibility: Supports duct diameters from 7" to 15"
• Tensioning Mechanism: Manual adjustment for controlled cable tie tension
• Cutting Function: Integrated cutter trims excess tie after tensioning is complete

Technical Specifications

• Tool Length: 32 inches
• Construction: Durable steel housing with molded grip handle
• Compatible Materials: Heavy-duty nylon strap ties
• Use Case: Duct hanger strap installation, round duct support, commercial HVAC systems

Application Notes

The 7-L300 is designed for mechanical fastening of flex and sheet metal duct using nylon tie straps. Proper tie tensioning ensures duct stability and minimizes sag, which is critical for maintaining airflow and system efficiency. This tool allows installers to manually adjust tightness and cut ties cleanly, improving consistency and speed across multiple installations.

Use of this tool is recommended for trained HVAC technicians and mechanical contractors. Always verify that cable ties used meet rated tensile strength and temperature resistance appropriate for the application environment.