In this excerpt from his Dead Men’s Steam School seminar, Dan Holohan looks at all of the different types of piping that you will find on steam heating systems. He talks about onepipe steam parallel flow with a wet return, onepipe steam parallel flow with a dry return, onepipe steam counterflow, the Mills System, twopipe steam with gravity return, onepipe steam with pumped return, twopipe steam vacuum system, twopipe steam with air vents, and more. He explains why some boilers are on high platforms, how to build a false waterline, along with other helpful tips for working with steamheating systems.

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