Taco designs and builds all its U and Straight Tube Heat Exchangers to ASME (Section VIII) requirements and does all fabrication in house so you get the quality performance you expect in your application. They’re available with standard pressure ratings of 150 PSIG for both tubes and shell at a maximum temperature of 350º F and optionally rated: tubes, 400 PSIG; shell, 250 PSIG, at a maximum temperature of 450º F, in a wide range of materials to meet varying conditions.