NISSEI USHIYAMA (THAILAND) CO., LTD.

How to Install Aluminum Foil Conduits Flush ｜ Reduce Leakage in HVAC & Electrical Systems

Loose conduit installations often cause leaks and efficiency losses in electrical and HVAC systems. This guide covers professional techniques to ensure safe and tight conduit installation.

■ Importance of a Flush Conduit Installation
Aluminum foil conduits are widely used in HVAC and electrical systems due to their lightweight, flexibility, and heat resistance. However, if installed improperly—especially if not flush—gaps can cause air or heat leakage, reducing system efficiency and risking long-term damage.

■ Choosing the Right Conduit Size for the Job
Select a conduit with an internal diameter 10–20% larger than the cable diameter. This allows for easy insertion, maintains a snug fit, and reduces the chance of compression damage during thermal expansion.

■ Using Conduit Tape to Prevent Joint Leaks
Use aluminum foil tape or heat-resistant tape. Wrap each layer with 50% overlap and in the opposite direction of airflow. This prevents tape loosening due to air pressure or heat over time.

■ Securing the Conduit to the Structure
Install conduit clips made of corrosion-resistant materials. Space them 50–100 cm apart based on conduit weight. Proper anchoring prevents vibration and thermal loosening.

■ Post-Installation Inspection
Conduct both visual checks and tool-based inspections such as pressure testing or thermal imaging. This ensures the system is leak-free and ready for safe operation.

■ Recommended Product: Aluminum Foil Corrugated Conduit “AFW3610”
From NISSEI USHIYAMA (THAILAND) CO., LTD., this model is ideal for use in automotive electrical systems, industrial machinery, and high-temperature environments.
Key Features:
・ Heat resistance: -40°C to +250°C
・ Triple-layer construction: High impact and tear resistance
・ Spiral design: Flexible and easy to cut
・ Suitable for heavy industry and electrical systems with thermal exposure

■ For more details, you can download the PDF or contact us directly.

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How to Install Aluminum Foil Conduits Flush ｜ Reduce Leakage in HVAC & Electrical Systems

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