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.
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!