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  1. Raj_2958

    Does presence of H2S> 50 ppm in Pumped fluid require use of Double Mechanical Seals

    CHoff07 Thanks for the response. The Client informed to use single seals for H2S concentration up to 10,000 ppm.
  2. Raj_2958

    Does presence of H2S> 50 ppm in Pumped fluid require use of Double Mechanical Seals

    I am doing a preliminary seal plan selection for various API 610 pump services. In the Client Specification for mechanical seal, i find a note for Foul Water service i.e. "H2S concentrations greater than 10,000 ppm requires dual seals". I have got foul water services with H2S concentration in...
  3. Raj_2958

    Does presence of H2S> 50 ppm in Pumped fluid require use of Double Mechanical Seals

    I am doing a preliminary seal plan selection for various API 610 pump services. In the Client Specification for mechanical seal, i find a note for Foul Water service i.e. "H2S concentrations greater than 10,000 ppm requires dual seals". I have got foul water services with H2S concentration in...
  4. Raj_2958

    Internal pump minimum flow bypass on Molten Sulfur pump

    Appreciate your quick response. I now understand that Client has gone ahead with 3600 rpm pump model. Since, these pumps are replacing an existing smaller pump, going with an 1800 rpm pump leads to bigger foot print. An 1800 rpm pump calls for lot of modification to the existing pit, which is...
  5. Raj_2958

    Internal pump minimum flow bypass on Molten Sulfur pump

    Thanks Johnny! I have seen continuous re-circulation on Low Flow OH2 pumps, through an orifice plate where the pump MCF is greater than the process minimum flow mentioned in the data sheet. In such case Re-circulated flow = Pump MCF - Process Minimum Flow. This application is unique where...
  6. Raj_2958

    Internal pump minimum flow bypass on Molten Sulfur pump

    My query is related to flow bypass on Molten Sulfur Pump. I am to review the vendor documents and not aware of the developments in inquiry stage. The inquiry requirement was as under: Pump type - VS4 steam jacketed. Total Rated Flow = 20 + 9 = 29 gpm (where 9 gpm is the assumed minimum...

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