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  1. A

    LPG Deepwell Pump Steady Bearing Failure

    By starting a new thread and not high jacking this one.
  2. A

    U-bend before pump suction inlet.

    There is a valve in the discharge pipe that would allow that.
  3. A

    U-bend before pump suction inlet.

    Would be great to hear their comments.
  4. A

    U-bend before pump suction inlet.

    In theory no, but no harm if fitted.
  5. A

    U-bend before pump suction inlet.

    As I suggested to the OP, ask the user - does it work?
  6. A

    U-bend before pump suction inlet.

    It's to make the pumps self-priming, nothing new. If I was designing it, I would increase the suction pipe diameter to increased the retention volume. Ask the people who own the system, "is it effective?"
  7. A

    Two Pumps of Different Product and Ratings Pumping into a Common Header

    And the product and flowrate total and flowrate for each pump is?
  8. A

    Pump modifications

    Pump detail might help with your question, ie make, model etc. Most small commercial submersible pumps are designed to operate under any condition.
  9. A

    Two Pumps of Different Product and Ratings Pumping into a Common Header

    You're over complicating the problem, just treat each pump as an individual unit and calculate the operating condition for each unit. Start from the inlet to each pump to the discharge point into header that already has a pressure of 62 psi. That means the difference in elevation from inlet to...
  10. A

    Flow inconsistence

    It's not rocket science, if pump 2 is only delivering 1.8m3/h it stands to reason that pump 1 is only supplying a similar flow - end of story, and really can't understand why this is a ongoing time wasting discussion from the OP. Why is pump 1 only pumping approx 1.8m3/h?
  11. A

    pumps with different kw rating

    Pumps can run at what ever speed needed to achieve the duty, if direct motor drive that of course is a function of motor speed.
  12. A

    pumps with different kw rating

    Unbelievable comment "that I should maintain 3000rpm regardless if it's 2pole / 4pole." 2 pole 50 htz can only be approx 3000rpm whereas 4 pole can only be approx 1500rpm.
  13. A

    pumps with different kw rating

    what are you trying to achieve, other than running around in circles - you are not making much sense at this point. As littleInch has already said, changing to 4 pole motors will halve the flow rate and give you 1/4 of the head, the first pump would now be rated -- 5 metre head @ 5m3h, second...
  14. A

    clogged suction or discharge pump linr

    Sorry, missed that one.
  15. A

    clogged suction or discharge pump linr

    Unless very mixed-flow or axial.
  16. A

    clogged suction or discharge pump linr

    Please define clogged.
  17. A

    Single Line on Piping

    Lack of response is probably good, it means the usual ongoing dozens of answers to a stupid question should come to an early end.
  18. A

    North Korean Ship Fails/Capsizes at Launch in Front of Kim

    No damage done, just execute a dozen or so bosses and workers and get on with building a new one and launch it in secret while pretending and informing everyone it never happened - "what failed launching?"
  19. A

    Pump Impeller

    Sealless positive displacement pump????????
  20. A

    Pump Impeller

    Temperature problem?

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