. Department bulletin. Agriculture; Agriculture. Bui. 1136, U. S. Dept. of Agriculture. PLATE A Reducing Valve with a Metal Bellows (A) and an Adjusting Spring in Place of Rubber Diaphragm and Weights. The Low-Pressure steam Enters the Bellows at the Top. The Desired Pressure is Secured by Turning the Adjusting Nut (B).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Dept. of Agriculture. Washington, D.
. Department bulletin. Agriculture; Agriculture. Bui. 1136, U. S. Dept. of Agriculture. PLATE A Reducing Valve with a Metal Bellows (A) and an Adjusting Spring in Place of Rubber Diaphragm and Weights. The Low-Pressure steam Enters the Bellows at the Top. The Desired Pressure is Secured by Turning the Adjusting Nut (B).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Dept. of Agriculture. Washington, D. C. The Dept. : Supt. of Docs. , G. P. O.
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Keywords: ., bookauth, bookcentury1900, bookdecade1920, booksubjectagriculture
