Welded Armored Pigtail

A welded armored pigtail is a flexible, high-pressure gas hose with welded metal construction and an outer armor casing to prevent kinking and ensure safety in specialty gas applications.

Construction and Materials

Welded armored pigtails are typically made with a corrugated stainless steel or Monel core, which provides flexibility while maintaining high-pressure resistance. The core is covered with braided stainless steel layers for additional strength. The end fittings, usually stainless steel or Monel, are welded directly to the hose, creating a leak-proof assembly suitable for high-purity or zero-effusion gas applications such as helium or hydrogen . An outer stainless steel armor casing is added to prevent kinking, whipping, or damage in case of internal failure .

Features

• High-pressure capability: Designed for pressures up to 3000 PSIG .
• Check valves: Some models include integrated check valves to prevent reverse gas flow .
• Zero-effusion: All-metallic welded construction ensures containment of even the smallest gas molecules .
• Custom configurations: Lengths, fittings, and optional tethering can be customized to meet specific requirements .
• Testing: Assemblies are pressure-tested to 150% of rated working pressure, and optional mass spectrometer helium leak testing is available for critical applications .

Applications

Welded armored pigtails are used in:

• Specialty gas systems requiring high purity and leak-free operation.
• Welding and cutting setups where flexible connections are needed between regulators, cylinders, and equipment .
• High-pressure gas delivery in laboratories, industrial, and medical environments.

Advantages

• Durability: Resistant to kinking, abrasion, and mechanical stress.
• Safety: Welded construction reduces the risk of leaks and gas escape.
• Flexibility: Maintains flexibility while handling high-pressure gases.
• Compatibility: Available with standard CGA connections and NPT fittings for easy integration . In summary, a welded armored pigtail is a robust, flexible, and safe solution for high-pressure or specialty gas applications, combining welded metal construction with protective armor to ensure reliability and leak-free operation.