The MalcoEdge TEH500 Tubing Expander Head is a precision 1/2-inch expansion accessory designed specifically for copper and aluminum HVAC and refrigeration lines. Engineered to integrate with the MalcoEdge TEMS expander tool, this head enables direct connections by expanding tube ends into smooth, leak-resistant swages—eliminating the need for fittings and brazing in many installations. Built from hardened steel, it delivers consistent performance even in demanding, high-pressure service environments.

Why technicians choose the TEH500

• Direct connections, fewer joints: Expand tube ends to create snug, leak-resistant swages that connect cleanly without brazing or extra fittings.
• 1/2-inch precision: Tightly controlled expansion ensures uniform swage diameter, reducing the risk of binding and preventing leaks in critical HVAC and refrigeration lines.
• Rugged, durable construction: Hardened steel construction stands up to daily use in busy service bays and field installations, maintaining accuracy over time.
• Seamless compatibility: Designed to work with the MalcoEdge TEMS expander tool, delivering a cohesive system for streamlined workflows.
• Leak-resistance by design: Smooth expansion minimizes surface irregularities that can become leak paths, contributing to long-term performance.

How it works with the MalcoEdge TEMS expander system

Pairing the TEH500 with the TEMS expander tool creates a compact, efficient workflow for expanding copper and aluminum tube ends. Technicians can prepare tubing, expand to the precise 1/2-inch dimension, and mate directly to compatible fittings or adaptors without torch work or brazing. This approach reduces heat-related concerns, speeds up service times, and lowers the potential for residue or flux-related issues in critical HVAC loops.

Ideal use cases

• Retrofits and upgrades in HVAC and refrigeration where space is limited and speed matters
• New installations that require robust, leak-tight joints without brazed connections
• Field service where quick, dependable swages help minimize downtime on cooling or heating lines
• Maintenance scenarios that benefit from repeatable, high-quality expansion shapes to ensure seal integrity

Practical tips for best results

• Keep tubing ends clean and free of burrs before expansion to achieve the smoothest swages
• Align the expansion head straight with the tube axis to prevent asymmetric swages
• Inspect each expanded end for uniform diameter and surface finish; rework if any irregularities are detected
• Test joints under appropriate pressure after installation to verify leak-free performance
• Store the TEH500 with other MalcoEdge components in a clean, dry environment to preserve precision

What you can expect in the field

With the TEH500, technicians gain faster install times and cleaner connections, especially in tight spaces where brazing isn't practical. The hardened-steel build provides dependable long-term durability, while the 1/2-inch expansion head delivers repeatable results across multiple service calls. The result is a streamlined workflow, reduced heat exposure on sensitive components, and joints that stand up to the pressures of modern HVAC and refrigeration systems.

Why this matters — a clear value proposition

In HVAC and refrigeration, the quality of a tube joint directly influences system efficiency and reliability. The MalcoEdge TEH500 addresses common pain points—costly fittings, potential leak paths from brazed joints, and time-consuming field brazing—by enabling precise, leak-resistant swages with direct connections. If you’re aiming for faster service, less heat damage, and dependable performance in copper and aluminum lines, TEH500 is purpose-built to deliver.