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Recent content by Bigbob1941

  1. Bigbob1941

    What is the difference between a pressure safety valve (PSV) and a rel

    A safety valve is a relief valve that has no cutoff between the process and the valve. It can't be isolated. A relief valve is a valve that can have a cutoff between the process and the valve and can be isolated.
  2. Bigbob1941

    Boiler ID Fan

    I think your answers have solved my problem. Thank you very much for the assistance.
  3. Bigbob1941

    Boiler ID Fan

    We have a 400HP, 480Volt, ID Fan being installed in a bag house for a 100,000 lb/hr boiler. The fan is made by Clarage and they have specified dampers on the discharge side of the fan only. There are no dampers on the inlet. The motor is powered by a VFD. It's designed so the outlet dampers...

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