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  • Users: wfjer
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  1. wfjer

    Booster pumps

    For crude oil pumps, usually a booster pump system is also installed. Is there any particular reason for doing so?
  2. wfjer

    TEFC vs TEAAC

    Hi, I'm preparing data sheets for some big pumps, medium voltage (4160V), and motors between 200 and 1000 HP. I have my doubts about requesting all motors with a TEFC enclosure, or maybe a TEAAC enclosure could be an option for the big ones. Can somebody give me some recommendations when to...
  3. wfjer

    OS&Y Valves NFPA requirement

    Hi, According to NFPA 20, section 2-9.5: "A listed outside screw and yoke (OS&Y) gate valve shall be installed in the suction pipe. No valve other than a listed OS&Y valve shall be installed in the suction pipe within 50 ft (16 m) of the pump suction flange." I was wondering why there is not a...
  4. wfjer

    ISO Code Name

    Somebody can tell me what the following codes are about or mean?: ISO4MMPPPPSTL2461 and ISO4MMPPPPSTG03888 Any help will be greatly appreciated.
  5. wfjer

    Minimum flow issue

    Hi, I have to give my approval for a proposal for a centrifugal pump, it should work at a rated flow of 38750 gpm @ 157 ft TDH, BUT it must be able to work with a flow of 15000 gpm (minimum). I have received a proposal for a pump that meets these conditions except that its minimum continuous...
  6. wfjer

    Waves in water storage tank

    Hi, I need to find a solution to the following problem: A 45000 bbls water storage tank has a 24" water inlet, the water that enters the tank is causing a lot of waves. These waves are causing damage to an oil skimmer float located in the surface of the water. Our client wants to find a method...

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