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  • Users: mfakharmechanica
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  1. mfakharmechanica

    SCREW PUMPS OR CENTRIFUGAL PUMPS

    Does anyone know when screw pumps are used. In the project we had lots of hydrocarbon like Naphtha, gas oil, gasoline…. For Fuel oil with the viscosity of 950 CP and flow rate of 1250m3/hr, I used twin screw pumps which now the client ask us to use the centrifugal ones or explain whay...
  2. mfakharmechanica

    Dual mechanical seals

    Dear Sir/Madam, Would you please explain when dual mechanical seals are used? I konw fr the hazardous services (toid,...)dual mechanical seal are used. We have some centrifugal API 610 pumps with hydrocarbon fluid (Aromatic Feed, Naphtha,…) with discharge pressure 13 barg. Some famous...
  3. mfakharmechanica

    Suction Specific Speed (Nss)

    Dear Sir/Madam, Would you please explain the physical meaning and effect of the Nss? I have found that it is related to pump performance and calculated for BEF of the maximum impeller diameter... Who it connect duty point to the BEP of maximum impeller diameter? Different reference present...

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