Corrugated Double-Walled Protective Conduit Kopos KF 75/50M blue, model KF 75N (50M)

Kopos corrugated double-walled protective conduit KF 75/50M (model KF 75N (50M)) is a flexible blue conduit designed to protect electrical cables and wiring in building installations. The conduit combines a ribbed outer profile with a double-wall structure to provide mechanical protection, flexibility for routing, and improved insulation around conductors. It is intended for use where robust protection of cable runs is required while maintaining ease of installation and adaptability to varied routing paths.

Advantages

The double-walled construction increases resistance to compression and improves insulation compared with single-wall conduits, while the corrugated outer surface offers enhanced flexibility and impact resistance. The blue color provides clear visual identification of the conduit route. The product is supplied in a continuous length that simplifies cutting and fitting on site and helps reduce the number of joints in long runs.

Suitable for

• Electrical cable protection in residential and commercial building installations
• Routing of signal, communication and power cables through walls, ceilings and service shafts
• Areas requiring flexible conduit runs with added mechanical protection

Key specifications

• Material: durable polymer double-wall construction for mechanical strength and electrical insulation
• Profile: corrugated outer surface for flexibility and impact resistance
• Color: blue for visual identification
• Length: supplied in a continuous 50 m roll
• Diameter nominal: 75 mm nominal internal/outer diameter suitable for multiple cable bundles

How to use

Measure and cut the conduit to the required length using appropriate cutting tools to ensure clean ends. Route the conduit along the planned path, allowing for bends and securing it with clamps or supports at regular intervals to prevent sagging. Insert cables into the conduit using pulling techniques or fish tape; where necessary, use lubricant approved for polymer conduits to reduce pulling force. Seal ends or joints with compatible fittings or grommets to maintain mechanical protection and prevent debris ingress.

Usage recommendations

For durable installations, avoid excessive bending beyond the conduit’s minimum bend radius and secure the conduit within walls or ceilings according to local electrical codes. Use compatible end fittings and gland seals when passing through enclosures or panels. Store the roll flat and protected from prolonged UV exposure to preserve material properties.