Peter Huber Metal Hose Connection Tubing, NW20 M30x1.5, 200cm

The Peter Huber 6427 is an industrial-grade insulated metal hose engineered for the most demanding high-temperature thermoregulation tasks. With a nominal width of NW20 and M30x1.5 threaded connections, this hose is designed to provide optimal flow characteristics and maximum heat transfer, significantly reducing power loss in external temperature control applications. Built for extreme conditions, it supports a vast temperature range from -100°C up to 350°C, making it a critical accessory for high-capacity Unistats and industrial-scale reactors. At 200cm (2 meters) in length, it offers a sturdy yet flexible connection. The hose features a high-quality stainless steel (1.4404) bellows construction protected by special multi-layer insulation and an additional smooth silicone outer jacket for enhanced safety and easy cleaning.

Key Features:

• Brand: Peter Huber
• Model/Order No.: 6427 (MT-350-2-M30x1.5)
• Connection Type: NW20 with M30x1.5 threading (Sleeve nut according to DIN 3870)
• Length: 200 cm (2 meters)
• Temperature Range: Extreme versatility from -100°C to 350°C
• Material: High-grade 1.4404 stainless steel with metal braiding for pressure resistance
• Insulation: Multi-layer thermal insulation with a smooth white silicone cover and protective silicone end caps
• Pressure Rating: Maximum operating pressure of 16 bar at 20°C (10 bar at 350°C)
• Dimensions: 56 mm outside diameter with a minimum bending radius of 225 mm
• Safety: Flame-resistant construction with a UL94-HB fire rating

This metal hose is specifically optimized for high-performance temperature control units where maintaining thermal integrity over distance is paramount. The silicone outer cover not only provides additional insulation but also acts as a safety barrier, protecting laboratory personnel from the extreme surface temperatures of the internal metal bellows. Its M30x1.5 fittings provide a standardized, vibration-resistant, and leak-free connection, ensuring long-term reliability in pilot plants and advanced research facilities.

Frequently Asked Questions

1. What is the benefit of the NW20 width compared to NW12?
The NW20 (20mm internal diameter) provides a larger flow cross-section than NW12 hoses. This reduces pressure drop and allows for higher flow rates, which is essential for maintaining temperature uniformity in large-scale external applications.

2. Can this hose be used for both heating and cooling?
Yes. With a rating from -100°C to 350°C, it is perfectly suited for ultra-low temperature cryogenic applications as well as high-temperature organic synthesis or distillation tasks.

3. Why does it have a silicone cover?
The silicone cover serves three purposes: it provides a secondary layer of thermal insulation, it protects the user from high-temperature metal surfaces, and it provides a smooth "wipe-clean" surface resistant to chemical spills.

4. Is it compatible with all Huber Unistats?
It is compatible with any unit that uses M30x1.5 connections. If your unit uses larger M38 or smaller M24 threads, Huber offers specialized adapters to ensure a secure fit.

5. What is the minimum bending radius?
The minimum bending radius is 225 mm. Bending the hose more sharply than this can stress the internal stainless steel corrugations, potentially shortening the service life of the hose.