WK-319 Tube Expander

The WK-319 Tube Expander is a professional hand tool engineered for accurate expansion of copper tubing in HVAC and refrigeration applications. It allows technicians to expand tube ends for direct tube-to-tube connections without the need for additional fittings, helping reduce joint count and potential leak points.

Designed for smooth and controlled expansion, the WK-319 maintains the integrity of the tubing while producing uniform results. Its durable construction ensures reliable performance during installation, maintenance, and repair work in both workshop and field environments.

With a working range from 1/8″ to 3/4″ (3–19 mm), the WK-319 is an essential tool for professionals who require precise and consistent tube expansion in their 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
Compact design suitable for small to medium tubing sizes
Durable construction for long-term professional use

Specifications

Product Type: Tube Expander
Model: WK-319
Application: Refrigeration and HVAC copper tubing
Supported Tube Sizes: 1/8″ to 3/4″
Metric Range: 3 to 19 mm
Material Compatibility: Copper tubes

Applications

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

FAQs

What tube sizes does the WK-319 support
It supports copper tubing from 1/8″ to 3/4″ and metric sizes from 3 mm to 19 mm

Is the WK-319 suitable for HVAC and refrigeration systems
Yes, it is designed specifically for HVAC and refrigeration copper tubing applications

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

Is the WK-319 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 regular professional installation and maintenance use