Peter Huber Metal Hose Connection Tubing, NW25 M38x1.5, 150cm

The Peter Huber 6656 is an industrial-grade insulated metal hose designed for extreme temperature thermoregulation from -100°C up to 350°C. Featuring a large NW25 nominal width and M38x1.5 connections, this 150cm hose is engineered for high-flow capacity and minimal pressure drop. Constructed from 1.4404 stainless steel with specialized multi-layer insulation and a smooth silicone jacket, it is the ideal solution for high-capacity Unistats and large-scale reactor systems requiring maximum thermal efficiency and user safety.

Key Features:

• Brand: Peter Huber
• Connection Type: NW25 with M38x1.5 threading (Sleeve nut according to DIN 3870)
• Length: 150 cm (1.5 meters)
• Temperature Range: Extreme versatility from -100°C to 350°C
• Material: Premium 1.4404 stainless steel for superior chemical and thermal resistance
• Insulation: Multi-layer thermal insulation with a smooth white silicone cover and protective end caps
• Pressure Rating: Maximum operating 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 (UL94-HB) designed to prevent surface burns

This heavy-duty hose is optimized for high-performance temperature control where high volume flow is paramount. The integrated silicone cover provides a secondary insulation layer and a "wipe-clean" surface resistant to chemical splashes. The M38x1.5 fittings ensure a vibration-resistant, leak-free connection for long-term reliability in pilot plants and industrial-scale research facilities.

Frequently Asked Questions

1. Why is the NW25 diameter significant for large systems?
The NW25 (25mm internal diameter) provides a significantly larger flow area compared to NW12 or NW20 hoses. This minimizes backpressure, allowing your Unistat to maintain high flow rates for better temperature uniformity in large jackets.

2. Can this hose be used for cryogenic applications?
Yes, it is rated down to -100°C. The specialized insulation and silicone jacket prevent ice formation on the exterior, keeping the workspace dry and protecting personnel from frostbite.

3. How flexible is this industrial-grade hose?
Due to the large diameter and thick insulation required for 350°C, it has a minimum bending radius of 240 mm. It should be routed with generous curves to avoid stressing the internal metal bellows.

4. Is the silicone cover resistant to thermal fluids?
The silicone jacket is designed to be resistant to many common laboratory chemicals and silicone-based thermal fluids. However, it should be wiped clean after any spill to maintain its insulating properties and prevent smoking at high temperatures.

5. Will this fit my Huber Unistat?
This hose is designed for larger Unistats equipped with M38x1.5 outlets. For units with M30 or M24 threads, Huber offers high-flow adapters to bridge the connection while maintaining system integrity.