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Posted by Drew on November 15, 2003 at 18:30:04:
My plumber just informed me that my natural gas line running into my 140,000 BTU steam boiler is too narrow and violates local code (even though I had it inspected and approved). While the "main gas line" is 1" diameter, the last 7 feet or so (about 2 feet horizontal and then about 5 feet vertical down to the boiler) of piping that run into the boiler are only 1/2" diameter. The plumber admitted that that the horizontal tapping that runs directly into the boiler should remain 1/2". So, my question is: if the final portion of the line running into the boiler MUST be 1/2 inch, how does it help to have the wider 1" gas piping? Isn't the gas flow rate only as high as that which the narrowest pipe on the line will allow?
I hope I've explained this properly. I'm a but nervous, as he said this restrictive gas flow can prematirely age the boiler, result in an imprpoer flame, and result in extra carbon monoxide.
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