High-Pressure Water

Issue 6 and Volume 52.

High-Pressure Water The difficulties in using water increase with increase of pressure. With good workmanship ordinary materials can be employed up to 750 pounds or 1,000 pounds to the square inch. Good, close-grained cast iron for cylinders and ordinary gunmetal for cocks and valves are quite suitable. This meets the case of most crane work, says a writer in “Cassier’s.” But for compression duty, as in forging and baling presses, and in the pumps and valves for working the same, iron and gunmetal are useless. In the large cylinders for the Belgian canal lifts cast iron was used, bonded with steel rings. These were worked at a pressure of 517 pounds per square inch (35 atmospheres). When pressures range from two to as much as four tons per square inch—say 300 to 000 atmospheres—the conditions are vastly more severe and exacting. Water at such pressure is nearly like solid steel…

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