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Radford's cyclopedia of construction; carpentry, building and architecture. Based on the practical experience of a large staff of experts in actual constrcution work (1909)

Johnson, Alfred Sidney, 1860-, Radford, William A., 1865- · Chicago Radford Architectural Co · leaf 346

An illustration from Radford's cyclopedia of construction; carpentry, building and architecture. Based on the practical experience of a large staff of experts in actual constrcution work, 1909, leaf 346
essure due to the increasingvelocity of the water is sufficient to close thevalve B. At the moment when the flow throughthis valve ceases, the inertia of the moving col-umn of water produces the so-called rammingstroke, Avhich opens the valve at C, and com- PLUMBING 299 presses the air in the… … Fig. 113. Cross-Section of Double-Acting Hydraulic Ram.Capacity, 1,400 gallons per minute; weight, 6,000 pounds. likened to the oscillations in a U-tube. At thisinstant the column of water in the drive-pipe has come to a rest; and the air-pres-sure being greater than the static head alone, 300…

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