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Recent content by pumpingtips

  1. pumpingtips

    Problem with pump foundation following ANSI/HI 1.4

    Compare this to large pumps that we install on skid frames, without concrete mass to hold things down!!... Hmmm. Pump vibrations are not that great anyway so providing the connecting pipework is well supported and protected, all should be fine.
  2. pumpingtips

    Allowable ANSI pump foundation tilt

    Running the pump at this slight angle will not cause any problems. Pumps are designed to handle axial forces. And guessing that the subsidence should cease after a while.
  3. pumpingtips

    High Head Pumping of Well Water

    Plunger pumps too expensive for this duty? Just worried about the variability of flows, and accompanying NPSH issues if only one of the two / three pumps is operating. We are at altitude (4500) and low atmospheric pressure brings the NPSH evaluation to the forefront a bit more than other...
  4. pumpingtips

    Looking for multi-stage water pump curve

    TenPenny, good pump curve, thanks. Exactly the duty. Looking at the curve I see that NPSH requirements are very high if we are running just one pump (parallel pumps) and out to the right on the curve at say 32-34 lps. Given our high altitude project of over 4,400m we will have issues at 20...
  5. pumpingtips

    Looking for multi-stage water pump curve

    littleinch.. thanks, but after 1hr trying I can´t get the launch to work without it defaulting to a pdf file instead of the java thing. I´ll keep trying different things.
  6. pumpingtips

    Looking for multi-stage water pump curve

    Hi Anyone have a multi-stage horizontal water pump curve you could post here without too much effort? I am having trouble finding something on google and this medium will be quicker than waiting for next week to ask suppliers. This follows my earlier post re well water. Final system design...
  7. pumpingtips

    High Head Pumping of Well Water

    Some great comments from you all and has helped a great deal, even towards put the correct phrasing in a project memo. Such is the value of good discussion "over a coffee". all the best.
  8. pumpingtips

    High Head Pumping of Well Water

    TenPenny... the pipe runs along a valley next to a dry creek zone and it do not want to entertain intermediate pumping given the diesel generator requirements with associated costs. LittleInch...great comments. You have grasped this well. The fresh water demand for the new minerals plant we...
  9. pumpingtips

    High Head Pumping of Well Water

    forgot to mention... the pumps are not the well pumps. The pumps in question are the transfer pumps located at the well head. thanks
  10. pumpingtips

    High Head Pumping of Well Water

    Greetings Earthlings, Question about pumping 130 m3/h along a 12 km pipeline, clean water, TDH will be about 430m (static is 300m), minesite application. Pipeline diameter will be 8". Any recommendations for type of pump or system of pumps? Keep in mind that the plant consumption...
  11. pumpingtips

    Situation when not enough liquid to be pumped

    Loo Kim, When the tank runs low the pump will pump a mixture of air and water. Therefore the pump curve does not apply exactly. Many pumps, like sump pumps run on low water levels and end up pumping air and water. It's not cavitation as there are no high suction pressures. It's just what we...
  12. pumpingtips

    Can someone help me figure out what is going in this pumping system?

    Jimmy, you are a good intern who is trying his best to provide good field data. Well done. This is an interesting brain teaser, particularly when you keep feeding us new info. Beware of plant technicians input. It seems that this system should/could be running using one pump and 2" valve...
  13. pumpingtips

    Dewatering pump options - approx 120 m LIFT

    Thanks for the well thought out responses. I'll take the comments on board and make some further reviews. I am really liking PC option even more. Regards
  14. pumpingtips

    Dewatering pump options - approx 120 m LIFT

    I should add that the 15,000 m3/h example was five pumps operating, not one!... just to... you know, make sure people stay calm through these difficult times.
  15. pumpingtips

    Dewatering pump options - approx 120 m LIFT

    hahaha. So interesting to see the different calibre of responses. Dubmac, I think you appreciate that this is not so straight forward as some suggest. Two stage split case, could be. Location for these pumps is 1200m underground pumping/"lifting" up to the main GEHO pump station for the main...
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