Cast iron or aluminum sectional boiler
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United States of America Patent
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Oct 28, 2014
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N/A
app pub date -
Aug 12, 2009
filing date -
Aug 14, 2008
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Abstract
A cast iron or aluminum sectional boiler has essentially annular sections, one front section, one rear section and at least one center section being provided which form a furnace chamber having essentially surrounding heating gas passages, and their annular water compartments are connected to one another via hubs. The sections have one return connection piece and one feed connection piece, one flue spigot as well as at least two anchor rods for holding the section block together. Annular gaps are provided as heating gas passages between each two adjacent sections, and that the heating gas passages are subdivided into a primary section and a secondary section.
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