Peter Huber Metal Hose Connection Tubing, NW25 M38x1.5, 300cm

The Peter Huber is an industrial-grade flexible metal hose engineered for high-performance thermoregulation in demanding laboratory and pilot plant environments. Featuring a nominal width of NW25 and heavy-duty M38x1.5 threaded connections, this tubing is designed to facilitate high flow rates while maintaining exceptional thermal stability. It is built to withstand extreme temperature fluctuations ranging from -100 to 350°C, making it an essential component for high-temperature reactors, autoclaves, and large-scale distillation units. At 300cm in length, this hose provides extensive reach and flexibility for complex facility layouts, ensuring a secure and durable link between your Huber Unistat and external applications.

Key Features:

• Brand: Peter Huber
• Connection Type: NW25 with M38x1.5 threading (Sleeve nut according to DIN 3870)
• Length: 300 cm (3 meters)
• Temperature Range: Extreme versatility from -100°C to 350°C
• Material: High-quality 1.4404 stainless steel construction for maximum chemical resistance
• Insulation: Special multi-layer insulation with an additional smooth silicone cover and protective silicone end caps
• Pressure Rating: Maximum pressure of 16 bar at 20°C (10 bar at 350°C)
• Dimensions: 63 mm outside diameter with a minimum bending radius of 240 mm
• Safety: Flame-resistant construction with a UL94-HB fire rating

This insulated metal hose is specifically optimized to minimize heat loss and prevent condensation, ensuring the highest operational safety for your temperature control circuit. Its robust design is capable of handling the significant thermal expansion associated with ultra-high temperature silicone oils. The standardized M38x1.5 fittings ensure a vibration-resistant, leak-free connection, providing long-term reliability for continuous industrial operations where precision and safety are paramount.

Frequently Asked Questions

1. What is the benefit of the integrated silicone cover?
The smooth silicone outer layer acts as a secondary protective barrier. It makes the hose easier to clean, provides additional thermal insulation, and protects laboratory personnel from the hot metal surface of the hose during high-temperature operation.

2. Can this hose be used for cryogenic applications?
Yes, the 6658 is rated down to -100°C. Its stainless steel bellows and specialized insulation prevent the hose from becoming brittle at extremely low temperatures, unlike standard polymer tubing.

3. How does the NW25 diameter impact my system's performance?
The NW25 (25mm internal diameter) allows for high volume flow, which is critical for maintaining uniform temperature control in large external applications. It reduces the pressure drop across the tubing compared to narrower hoses.

4. Is it safe to bend this hose for tight installations?
While flexible, this hose has a minimum bending radius of 240 mm. Bending the hose more sharply than this can stress the internal metal bellows and lead to premature wear or failure under high pressure.

5. Does this hose require periodic maintenance?
It is recommended to inspect the threaded connections and the silicone outer jacket for signs of wear or thermal degradation regularly, especially when used frequently at the maximum temperature of 350°C.