CCI’s DRAG® disk stack controls flowing velocities throughout valve trim by forcing the process fluid to follow a tortuous path of right-angle turns. The resistance to flow provided by these turns (or stages) limits the trim exit velocity to a safe level, regardless of the pressure drop.
The DRAG® choke valve eliminates problems resulting from excessive fluid velocities – erosion of trim and body, noise, vibration, poor process control. Fluid velocities within the trim of CCI choke are typically one-third to one-quarter those of conventional single stage chokes. Velocity control protects the trim from erosion and increases the trim life many times.
We spent several years developing the manufacturing and design technology to make solid tungsten carbide DRAG® disk stacks. As a result, we can now make all stages from hard, erosion-resistant tungsten carbide.