Heat Exchangers

Increase your plant productivity with shell and tube heat exchangers.
shell and tube heat exchanger
  • State-of-the-art, in-house phenolic impregnation
  • ASME Code stamp/ G-mark available
  • Carbon steel/ SST/ Fluorpolymer lined shell options
  • Multi-pass construction available
  • Fully enclosed, skirted tubesheet design
  • Flatplate graphite nozzle eliminates potential failure
  • Many baffle materials to meet your requirements

Shell & Tube

CG Thermal’s Impervite® shell and tube heat exchangers are designed to be the “work horse” of the industry. Utilizing our proprietary grade of phenolic impregnated graphite it offers excellent service life in corrosive condensing, vaporizing, absorbing, heating and cooling applications. Compared to other graphite heat exchanger designs it has competitive capital investment cost, high reliability, and high return on investment.

Impervite® is a composite material consisting of a graphite substrate impregnated using a proprietary phenolic impregnation process. Impervite is ideally suited for processing mixed acids, sulfuric acid, hydrochloric acid, phosphoric acid, nitric acid, waste acids, and chlorinated hydrocarbons. It has excellent machining, physical, and thermal properties.

Impervite Graphite shell and tube heat exchanger


  • Designed and tested per ASME SEC VIII Div 1, TEMA, ANSI, ASTM, and stringent in-house standards.
  • Large cross-sectional process flow areas for low pressure drop and/or high fouling applications.
  • Up to 100 psig (6.89 barg) and 340 Deg F (171 Deg C) operating conditions.
  • Exceptional fatigue resistance.
  • High thermal efficiency.
  • Tube diameter options include 7/8” (22 mm) and 1.50” (38 mm) inside diameter.
  • Heat transfer areas range from 8 ft² (.74 M²) to 15,500 ft² (1,448 M²).

Shell & Tube Heat Exchanger Gallery