Copper Tubing in Protective Sheath 3/8" Round 25 m DAHUA Tivento Flex

DAHUA Tivento Flex copper tubing in a protective sheath, 3/8" round, 25 m, is a continuous roll of corrosion-resistant copper pipe designed for refrigeration, HVAC and fluid transfer installations. The tubing combines the thermal and mechanical advantages of copper with an outer protective sheath that reduces surface damage during handling and installation and offers basic environmental protection for exposed runs. Supplied as a 25 m coil, this product simplifies long continuous runs and service connections where a uniform, durable copper line is required.

Advantages

The copper construction ensures reliable thermal conductivity and long-term resistance to corrosion in refrigerant and fluid lines while the protective sheath minimizes abrasion, scratches and minor dents during routing and installation. The round 3/8" diameter provides a common size for many HVAC and refrigeration circuits and the 25 m length reduces the number of couplings needed on longer runs. The continuous roll format speeds up installation and reduces joint points, improving leak integrity and system reliability.

Suitable for

• Refrigeration system liquid and suction lines where 3/8" tubing is specified
• Air conditioning installations including split and multi-split systems
• Fluid transfer in HVAC service and repair operations
• Retrofit and new-build installation runs requiring continuous copper tubing

Key specifications

• Material: copper with external protective sheath
• Shape: round
• Nominal diameter: 3/8" (imperial nominal size)
• Length: 25 m continuous roll
• Intended use: refrigeration, air conditioning and HVAC fluid transfer

How to use

Cut the tubing to length using appropriate tubing cutters to preserve a clean, square end for brazing or flaring. Remove the sheath only where a direct joint or connection is required, following manufacturer guidance for sealing and thermal insulation at joints. For brazing, purge the line with inert gas to prevent oxidation and follow standard HVAC brazing procedures. When routing, avoid sharp bends beyond the minimum bend radius for 3/8" copper tubing and secure the line at regular intervals to prevent vibration and stress on fittings.

Usage recommendations

Store the coil protected from prolonged UV exposure and moisture. During installation, inspect the sheath and copper surface for damage and replace sections that show significant deformation or breaches. Use compatible fittings and brazing materials suited for refrigeration and HVAC service to maintain system integrity.