Introduction
BCF range of double ferrule fittings work on the proven principle of two ferrules swaging to the tube when tightened. As the nut is tightened the front ferrule swages on to the tube making a prominent leak-proof seal and the back ferrule makes a positive impression on the tube with the help of back cone of front ferrule hence making a strong hold on the tube. Make and remake of the fittings is very much eased, as nuts are silver plated internally to prevent galling of threads. The identification between Metric and Inch fittings is made very simple with the help of stepped shoulders in metric fittings.
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