USS Preston (DD-19)- 6 - 7 - 8 Oil Cooler Circulating Vertical Simplex Piston Pump, Sheet No. 3 - NARA - 117877529.jpg
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USS Preston (DD 19) 6 7 8 Oil Cooler Circulating Vertical Simplex Piston Pump, Sheet No. 3 NARA 117877529, USS Preston (DD-19), US National Archives series: Alphabetical Series of Ship Engineering Drawings, Images from the National Archives and Records Administration, US National Archives location: other, USS Preston (DD-19): 6 - 7 - 8 Oil Cooler Circulating Vertical Simplex Piston Pump, Sheet No. 3
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lift pump force pump oil pump circulating circulate embolus cooler piston ring piston vertical section