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    • what is the difference between ''pressure'' and ''pressure head''

      Vanfa
      Vanfa
      Hello, what is the difference between ''pressure'' and ''pressure head'', according WaterCAD Best regards
      • Answered
      • over 9 years ago
      • OpenFlows | Water Infrastructure
      • OpenFlows | Water Infrastructure Forum
    • Re: Field pressure readings upstream and downstream of PRV. HGL or not?

      Mal Sharkey
      Mal Sharkey
      Normally the gauges will give you gauge pressure. You need to accurately measure the gauge's elevation, and add that to the pressure reading to get the HGL. Also, if the gauge measures pressure (e.g. in kPa), you will need to convert that to pressure…
      • over 13 years ago
      • OpenFlows | Water Infrastructure
      • OpenFlows | Water Infrastructure Forum
    • Re: Pressure and Pressure Head, what are the differences?

      Mal Sharkey
      Mal Sharkey
      I have a slight correction to Jesse's post...pressure head is pressure divided by specific weight (not specific gravity). Specific weight of a fluid = density of the fluid x acceleration due to gravity. Pressure head is convenient because it is…
      • over 13 years ago
      • OpenFlows | Water Infrastructure
      • OpenFlows | Water Infrastructure Forum
    • Re: Pressure and Pressure Head, what are the differences?

      Jesse Dringoli
      Jesse Dringoli
      " Pressure head " is the " Pressure " divided by the specific gravity of your fluid, which you can change in the calculation options. So, they will only be equal if the specific gravity is 1.0 (using the same units for both, such as feet or meters) …
      • over 13 years ago
      • OpenFlows | Water Infrastructure
      • OpenFlows | Water Infrastructure Forum
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