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copper piping a commercial steam boiler — Heating Help

The Apricus heat pipe design comprises a long hollow copper pipe with a larger diameter bulb at one end. A small amount of high purity water is added into the heat pipe and then heated to high temperatures to evacuate any air from within the space. The result is a vacuum, similar to the space between the glass walls of the evacuated tube.

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Evacuated Tube Solar Panels - Solar Hot Water | Navitrion

Nov 10, 2008 · Steam boilers (low pressure) should be piped with sch 40 black steel pipe and steam fittings, rather than black malleable. Copper will not hold up when soldered, to the pressures and expansion of steam. Besides, 4" copper is extremely pricey, when compared to steel pipe. I suggest you purchase Dan's book, "The Lost Art of Steam Heating".

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