137 STEAM TRACING DESIGN GUIDELINES - Control …

Fax: INTRODUCTIONS team TRACING is one of many ways topreheat, add heat and prevent heatloss from piping systems and theircomponents. Some other ways are: Jacketed piping Hot water and oil TRACING Dowtherm tracingJacketed piping systems are used pri-marily to maintain a constant high tem-perature. Due to its high cost of con-struction, jacketed systems are seldomused except where temperature controlis critical. Hot water and oil must bepumped at a high velocity to maintaina desired temperature, and must havea separate return header as does Dow-therm. Hot water, oil or dowtherm arealso an additional system which add tothe cost of a TRACING is most often selectedbecause: There is generally available a surplusof low and/or medium pressuresteam.

Steam tracing material is normally as follows:-Use the material specified for steam piping from the steam header (through the distribution manifold, if applicable) to and including the tracer block valve.-Use 1/4” through 7/8” O.D. copper or stainless steel tubing (depending on the design conditions) from the block valve to the steam trap.

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