USS Henley (DD-39)- 6 1-2" Boiler Stop Valve with Operating Gear Pressure 101 to 300 Lbs - NARA - 75841816.jpg
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USS Henley (DD 39) 6 1 2" Boiler Stop Valve with Operating Gear Pressure 101 to 300 Lbs NARA 75841816, USS Henley (DD-39), US National Archives series: Alphabetical Series of Ship Engineering Drawings, Images from the National Archives and Records Administration, US National Archives location: other, USS Henley (DD-39): 6 1/2" Boiler Stop Valve with Operating Gear Pressure 101 to 300 Lbs
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ヘンレイ
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high gear pressure unit coin-operated