Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 399
pressure in the boiler, as shown bythe gauge, to. the height which isdeemed safe; adjust the valve tothe lifting point by the nuts onthe side bolts. If not in positionon a boiler, test by a pump. Hydrants.—For water-servicein connection with high-pressuremains. Fiff. 882 is a section of a post- Fir… … MACHINE DESIGN AND MECHANICAL CONSTRUCTIONS. 383 the hydrant. The valve is opened by being forced down into the cavity of abranch of the pipe-main; n is the nozzle for the coupling of the hose; outside the main pipe of the hydrant there is acase, extending from near the line of valveto the ground…
Mechanical drawing
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