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  1. mvelez

    Lobe pumps or gear ??

    It all depends... I can give you hand even being a non native english speaker... Please provide: fluid temperature required massflow required discharge pressure and VERY IMPORTANT Available NPSH (net positive suction head) of your system. Mvelez
  2. mvelez

    FULL VACCUM TEMPERATURE

    I have two evaporators working at 0,3 mBara (which is 0,000435 psia) and 380°C (which is 716 F)
  3. mvelez

    FULL VACCUM TEMPERATURE

    sorry I meant -273°C (meaning 0 K)
  4. mvelez

    FULL VACCUM TEMPERATURE

    in the phase equilibrium you will find a corresponding temp for each pressure level. on an industry level, you should never speak about full vacuum as it is in the practice, impossible to achieve. on an industrial enviroment you should always talk about a certain absolute pressure (regardless of...
  5. mvelez

    Gear Pump supplier

    no, I have spoken to their rep and they are pretty lost on the matter...
  6. mvelez

    Gear Pump supplier

    Dear All. I am looking for a trustworthy supplier of a gear pump working with crude oil bottoms (like an asphalt) which are 330°C (theese bottoms have a lower viscosity than water at this temperature)and under high vacuum on the headspace of the tank supplying the pump (3 mBar abs, so very...

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