Corrugated Triple Tube (CTT)

The APV ParaTube CTT consists of a center tube positioned in a middle tube which is concentrically located in the outer tube. Stainless steel spacers are used to keep the tubes properly separated. The result is an annular space where heat transfer effectively occurs from both sides. The triple tube is generally applied to high viscosity or Newtonian fluids which may or may not contain small fibers or particulates.


  • Working temperatures up to 545°F/285°C
  • Design pressures to 871 psig/60 bar
  • Flexibility in materials of construction from carbon steel to special alloys
  • High particulate capacities
  • Can handle high viscosity products
  • Resistant to fouling
  • Robust
  • Easy maintenance


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