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9. Gas Piping



In the piping of any building, there are a few rules that should be observed, whether Coal Gas or Gasolene Gas is to be used. All Illuminating Gas is subject to condensation- that is, dropping some of its moisture - which will run to the lowest point it can reach. It is therefore important to have all horizontal pipes drip back to the riser. Also, to take all outlets from top or side of horizontal pipes and to take branches for side-wall outlets from the horizontal pipes below instead of above such outlets. It is also important to have the sizes of pipes large enough to insure a good flow of gas to all the burners.

The following scale of sizes has been adopted by the principal Gas Companies and is amply large if faithfully followed, but the Fitter should count for each outlet the number of burners it will probably be used for.