USS Preston (DD-19)- Standard 2 1-2" Angle Stop-Check-Lift Valve (0 to 100 Lbs) - 3 1-2" Angle Stop-Check-Lift Valve (0 to 300 Lbs) - NARA - 117877499.jpg
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USS Preston (DD 19) Standard 2 1 2" Angle Stop Check Lift Valve (0 to 100 Lbs) 3 1 2" Angle Stop Check Lift Valve (0 to 300 Lbs) NARA 117877499, 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): Standard 2 1/2" Angle Stop-Check-Lift Valve (0 to 100 Lbs) / 3 1/2" Angle Stop-Check-Lift Valve (0 to 300 Lbs)
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angle-park improper fraction check mark