WK-670 Tube Expander

The WK-670 Tube Expander is a professional hand tool built for accurate expansion of large-diameter copper tubing in HVAC and refrigeration applications. It allows technicians to expand the ends of copper tubing for direct tube-to-tube connections, reducing the need for additional fittings and minimizing potential leak points.

Engineered for smooth and controlled expansion, the WK-670 ensures uniform results while protecting the tubing wall from deformation. Its robust construction provides reliable performance during installation, maintenance, and repair work. With a wide working range from 1/4″ to 2-3/4″ (6–70 mm), it is suitable for a variety of copper tubing sizes commonly used in commercial and industrial HVAC and refrigeration systems.

Key Benefits

Allows direct copper tube connections without couplings
Produces smooth and uniform tube expansions
Reduces leak points in refrigeration and HVAC systems
Supports a wide range of tubing sizes for versatile applications
Durable construction for professional service use

Specifications

Product Type: Tube Expander
Model: WK-670
Application: Refrigeration and HVAC copper tubing
Supported Tube Sizes: 1/4″ to 2-3/4″
Metric Range: 6 to 70 mm
Material Compatibility: Copper tubes

Applications

Refrigeration system installations
Air conditioning piping work
Copper tube expansion for large HVAC systems
Maintenance and repair service operations
Workshop and on-site professional use

FAQs

What tube sizes does the WK-670 support
It supports copper tubing from 1/4″ to 2-3/4″ and metric sizes from 6 mm to 70 mm

Is the WK-670 suitable for HVAC and refrigeration systems
Yes, it is designed specifically for large copper tubing in HVAC and refrigeration applications

Does this tool reduce the need for fittings
Yes, it allows direct tube-to-tube connections without additional couplings

Is the WK-670 easy to operate
Yes, it is designed for controlled manual operation with consistent results

Can it be used for professional service work
Yes, it is suitable for installation, maintenance, and repair tasks