Witzenmann Inconel 625 Annular Hose (HYDRA Series)

The Witzenmann Inconel 625 Annular Hose (HYDRA Series) is a Inconel 625 annular corrugated metallic hose. Inconel 625 single-braid annular (Witzenmann HYDRA). Working pressure to 145 bar at the smallest bore; operating temperature -200°C to +815°C.

Inconel 625 delivers the corrosion / temperature envelope that no stainless grade can match: sustained high-temperature service to +815°C, sour-gas combustion exhaust, marine chloride exposure, and nuclear-rated installations.

Construction

• Type: Exotic Alloy Annular — Inconel 625 single-braid annular (Witzenmann HYDRA)
• Core material: Inconel 625
• Braid: Single Braid — Inconel
• End fitting material: DIN 1.4571 / 316Ti SS standard; Inconel fittings on request
• Nominal ID range: DN 6 (1/4") to DN 200 (8")
• Bend radius (static / dynamic): 35 / 175 mm minimum
• Weight: ~0.34 kg/m (size-dependent)

Performance

Working pressure 145 bar (smallest bore, single braid configuration) — derates with increasing diameter and temperature per the OEM datasheet. Burst pressure 580 bar minimum, safety factor 4:1 per ISO 10380. Operating temperature -200°C to +815°C continuous; intermittent excursions evaluated on request. All assemblies hydrotested at 1.5× working pressure with witness-test certificate available.

Applications

• European chemical / petrochem HT service
• Aerospace HT exhaust systems
• Power generation HT lines
• Premium nuclear-rated EU installations

Compliance

• ISO 10380:2012 PSL 3 (Corrugated Metal Hoses and Hose Assemblies)
• Pressure Equipment Directive 2014/68/EU Module H
• EN 13480 / ASME B31.3 (Inconel)
• NACE MR0175 / ISO 15156 (sour-service compliant)
• TÜV / CE marking
• EN 10204 3.1 / 3.2 mill test reports on request

How to order

Confirm (a) line working pressure and process medium (specify chemistry, temperature, and any concentration limits — exotic-alloy selection depends critically on the corrosion envelope), (b) operating temperature range, (c) bore size and overall length, (d) end fitting style and matching alloy preference (matched-alloy fittings are recommended for severe service; SS fittings reduce cost where corrosion permits), (e) braid count (drives pressure rating), (f) any required certifications. Indus quotes ex-OEM with mill test reports, alloy-specific certifications, and pre-shipment hydrotest certificates.

Companion products

For severe sour service, ask about the matched Inconel 625 expansion-joint variant. For high-vibration installations, add a Lock-Section or Armor-Flex external hose guard. For fire-rated runs, the Fry-Sil Fire Jacket / Fire Tape can be added without compromising the alloy core. Indus also supplies matched-alloy ANSI flanges, gaskets (RTJ for high-pressure RF), and stud bolts.