Bowden-Smith, Edward Cyril · New York, D. Van Nostrand Company · leaf 40
ion of the effluent, is too obvious to need dilation. From a superficial inspection of the drawing it wouldappear, at first sight, that the valve would not retainits position, but the pressure of the water on the under-side is so exerted that the front of the valve cannotavoid being hfted, in which… … Multiple Clear-way Valve Plate Ph
Pumping machinery
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