Audels Engineers and Mechanics Guide Volume 6

Audels Engineers and Mechanics Guide Volume 6

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1921 edition. Excerpt: ... Beaumont fields, particularly, there were many, who on general principle, prophesied rapid deterioration of boiler surfaces, without giving due thought to the fact that certain kinds of coal having a larger sulphur content than the oil had for years been used for fuel without serious trouble. Experience has demonstrated that sulphur in oil has no bad effect on boilers, except in cases of neglect, when pitting may occur under certain conditions, the same as with coal. Corrosion of copper heating coils has, however, been noticed in the presence of sulphur bearing oils, and for this reason it is the recognized practice to use steel coils. Brass and bronze fittings may be used, however, with safety, both in pumps and on pipe lines, and doubtless brass heater tubes could be employed if desired. Note.--Oil piping for U. S. Naval Service. The piping specified is seamless drawn steel, with flanges expanded on. The joints are scraped and made up metal to metal. Manila paper gaskets are allowed on suction piping. Screwed fittings are used on connections under Ji-in. For merchant service extra heavy welded iron or steel pipe is used, with screwed joints and with extra heavy galvanized iron fittings. Flanges are screwed on the pipe and rnanila paper or card board is used for gaskets, or special oil proof packing, of which there are several kinds in the market. Rubber is not allowable on account of sulphur in the oil. Copper piping is not used on account of the sulphur, but brass and composition fittings, valves, unions, etc7 may be used safely. The suction piping should be large, the Newport News rule for designed velocity of Mexican oil through suction pipes being not over twenty feet per minute, the oil being heated to reduce the viscosity to about 300..
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Product details

  • Paperback | 134 pages
  • 189 x 246 x 7mm | 254g
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236584112
  • 9781236584113