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  • Users: twhite
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  1. twhite

    Setting Relief Valve

    Hello, I am learning as I go here, so please excuse any sign of ignorance. I have designed and am now troubleshooting a lubrication power unit for a large piece of equipment. The power unit is designed to flow up to 53GPM of ISO 150 (750 SSU) weight oil. In this circuit is a large oil cooler...
  2. twhite

    80-50 vs. 90-60 Steel question

    Besides the obvious tensile and yield differences between 80-50 and 90-60 ASTM A148 steel, does anyone know of any other differences between these cast steels? Is 90-60 harder to weld? Is 80-50 less expensive? Anything else I should know so that I can choose the proper cast material for an...

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