Comp Air Treatment System P. Ltd. Manufactures Counter-Flow Designed Heat Exchanger. Comp Air Treatment System P. Ltd. Supplies compressors, heat exchangers, chiller condenser, non-return valves moisture separators automatic drain traps, automatic drain valves and various types of compressors spares. The design of Counter-Flow Designed Heat Exchanger confirms to standard codes such as TEMA, ASME, IS, BS etc. The shell is fabricated out of carbon steel. Tubes are offered is materials such as copper, Brass, Stainless Steel, SA179 etc. The Counter-Flow Designed Heat Exchanger single pass, two pass counter- flow, shell-and-tube design provides close approach temperatures, gains maximum heat removal benefit from expensive cooling water.