back headers
- plural of back header.
Example Sentences
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The tubes are of two sizes, the two lower rows and the return tubes between the back headers and steam-chest being 315⁄16 in. outside diameter, and the remaining tubes 113⁄16 in.
From Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 2 "Bohemia" to "Borgia, Francis" by Various
The back headers are each connected at their upper ends by means of two long horizontal tubes with the steam-chest, the bottom ends of the headers being closed.
From Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 2 "Bohemia" to "Borgia, Francis" by Various
