Cold-Flex 401 hose pipe [gray]

Description

Specification	Detail / Value (Based on 2 mm Series)	Notes
Product Name	COLDFLEX 401	The base model part number in the 2 mm flexible hose line.
Product Type	Flexible Capillary/Instrumentation Hose	Used for pressure sensing, vibration isolation, and fluid sampling.
Color	Gray	The unique color for visual distinction. Often used as a neutral, common, or reference line.
Inner Diameter (ID)	2.20 mm	Consistent internal bore size for microbore applications.
Outer Diameter (OD)	5.65 mm	Required for compatibility with standardized crimp fittings
Max Working Pressure (WP)	$\mathbf{50 \text{ bar}}$ (Approx. 725 psi)	Maximum safe sustained operating pressure.
Burst Pressure	Extremely High ( $\mathbf{>1000 \text{ bar}}$ )	Provides a substantial safety margin for high-pressure systems.
Minimum Operating Temp	Cold Flexible Rating (Typically $\mathbf{-20^\circ\text{C}}$ or lower)	The material is specifically formulated to remain flexible and not stiffen in cold ambient conditions.
Refrigerant Compatibility	Excellent (Low Permeability)	Meets EN 1736 standards for minimal refrigerant diffusion (e.g., R410A) through the hose wall.

Vibration Dampening: The main function is to isolate pressure instruments (gauges, transducers, switches) from the high-frequency vibration of compressors and other moving parts. This results in stable, accurate measurements and extends the lifespan of the instruments.
Color Coding (Gray): The Gray color provides a necessary visual identifier in complex systems. While Blue/Red/Orange often designate specific high/low-pressure lines, Gray can be used for neutral connections, oil equalization lines, or custom reference points.
High Safety and Durability: Despite being flexible, the hose construction (including internal reinforcement) ensures it can handle high system pressures safely, making it suitable for modern HVAC/R systems.
Cold Flexibility: The “Cold Flex” nature guarantees that the hose remains pliable and easy to work with, even during installations or maintenance in low ambient temperatures, preventing kinking or damage.
Chemical Resistance: The polymer construction is chemically resistant to refrigerants and compressor oils, ensuring the hose assembly remains leak-free and reliable over time.

COLDFLEX 401	COLDFLEX 401 is, therefore, the gray, high-performance, and flexible solution for creating durable, vibration-isolated connections for pressure instrumentation in demanding refrigeration and cold-chain applications.

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