SD's flareless bite type fittings has a unique three-piece design
having a body, a special case hardened ferrule and a nut. Unlike
ordinary compression joints, when the nut is screwed on to the body, the
ferrule grips the pipe in position and perceptibly bites in the pipe
surface to provide a positive seal. When tightened fully the case
hardened ferrule is bowed slightly in the middle and acts as a spring.
This spring action of the ferrule maintains a continuous tension between
the body and nut and prevents the nut from loosening under vibration and
This unique function of ferrule is a result of careful selection of
right materials, precision machining, and casehardening to give it a
hard exterior and a soft core. The ferrule thus not only bites into the
pipe readily and superficially without causing surface cracks, but also
maintains its spring action for repeated use without loss of strength
and sealing qualities.
SD flareless bite type fittings are manufactured to DIN 2353 standards
making the fitting standard globally with the dimensions, materials and
shapes the same making it acceptable all over the globe. These tube fittings
also confirm to BS 4368.
¼ TO 2 in Inch OD & Nominal Bore Tubes
6mm to 42 mm in Light Series Metric OD Tubes
6mm to 38 mm in Heavy Series Metric OD Tubes