When the nut is tightened,
the back ferrule is driven against the tapered rear of the front
ferrule. The front ferrule is driven by force into the tapered
mouth of the fitting body and creates a primary tubing seal. The
back ferrule consistently grips the tube to hold the fitting and
tubing firmly in place while the front ferrule forms a full
-faced seal on the tapered surface of the body. In the
twin-ferrule tube fitting design, the back and front ferrules
move axially instead of a rotary motion. No Torque is
transferred to the tubing during installation.
- FRONT FERRULE CREATES A SEAL ON THE TUBING AND FITTING
BODY.
- NUT THREADS ARE SILVER PLATED TO ELIMINATE GALLING.
- BACK FERRULE RADIALLY PROVIDES A GRIP ON THE TUBING.