6D Series Double ferrule Tube Fittings - FITOK

FITOK Group

  • FITOK 6D Series Tube Fittings Maximum working pressure 138 MPa
  • Quick and easy installation, high reliability in a variety of harsh working conditions.
  • EC79 Certified

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6D Series Double ferrule Tube Fittings - FITOK

  • FITOK 6D Series Tube Fittings are designed to provide reliable and leak tight connections for hydrogen applications. 
  • FITOK tailor-made 316/316L SS, with Nieq ≥ 28.5%, offering better  resistance to hydrogen embrittlement. 
  • Hardened threads with smooth surface finish extends service life. 
  • Female nut threads are silver-plated to reduce operating torque and avoid galling. 
  • Radius junction design for elbows provides smooth flow path
  • EC79 and ECE R110 certified, suitable for hydrogen and CNG/NGV applications.  

Key features

  • FITOK's customized stainless steel material for better hydrogen embrittlement resistance
  • Double-ferrule construction, high-precision machining and advanced hardening process ensure excellent sealing performance and anti-vibration performance
  • For the highest level of performance, recommended to be used with FITOK TMP and TCT series tubing
  • EC79 approval of 35 MPa hydrogen system application for tube fittings no more than 5/8 in. (16mm)
  • Easy to install, quick installation with excellent repeatability 

Application areas

  • Instrumentation Hook-Up Systems
  • On-board vehicles
  • Hydrogen Service
  • Hydrogen Production Facilities
  • Hydrogen Storage and Delivery systems
  • Analytical Installations

Contact us

  • FITOK's specialized products and professional services meeting your needs in hydrogen applications. Interested? Please contact FITOK, by filling in the RFQ or Contact Vendor form.
Brand FITOK
Manufacturing Readiness (MRL) 10
Technology Readiness (TRL) 9
FITOK Group

Founded in 1998, FITOK Group has been a global leading supplier of valves and fittings, having our factories in Germany, USA and China, and inventory and sales service centers in Germany, USA, China and UAE.

We have the capability to manufacture and supply 5 different product categories, including:

  • General Instrumentation Valves and Fittings
  • Medium & High Pressure Valves and Fittings
  • High Purity & Ultra High Purity Products
  • Sampling Systems
  • Tubing

FITOK has extensive experience in hydrogen applications, including challenges of hydrogen embrittlement, low temperature, pressure cycle, and leakage due to vibration. FITOK products for hydrogen applications are specified with the suffix “EC79” or “HG”

99% of all inquiries get answered within 5 days. Your inquiry will be sent immediately to the right person within the vendor organisation.

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