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VIS-LOK Stainless Steel Compression Tube Fittings

VIS-LOK double ferrule tube fittings offer a unique advancement in compression tube fittings, a correct tightness indicator! This visual indicator, which can be seen from a distance, avoids failures due to loose fittings and makes your installation SAFE! VIS-LOK is fast and safe to install and every fitting can be checked visually for correct tightness before start-up, eliminating costly and potentially dangerous leakage.

VIS-LOK Stainless Steel Tube Fittings

  • quick installation
  • assurance at every connection
  • no inspection gauge required
  • easy & assured installation even for non-experienced installers

Installation Procedure


Prepare the required fitting composed of body, nut, front & back ferrule, check ring & identification ring.


Insert tube into the fitting fully and finger-tighten nut.


Tighten with appropriate tools until check ring comes off. Done!

* Pipe and tube lengths can vary by +/- 2%
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