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Ian Simpson
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If you can't use key, taper or key-less bush then it doesn't leave much option now does it?
What's left, weld - not very likely.
Screwed on - possible.
Shrink fit -possible
Or last resort - super glue?
Custom designed large mixed flow and axial flow impellers carefully matched to the application can achieve efficiencies into the high 90's.
It would help to use terms everyone understands as this is an international forum. Is BPD -- bucket-a-day, barrels-a- day. GPM, USGPM or litres/ sec would be helpful. to your question.
Need a lot more information before we can even take an educated guess at your problem.
Does the motor bearing carry the pump thrust.
Is it a bearing vibrating
Is it the pump vibrating
Is there sufficient submergence over the pump inlet
Is there any…
Just enough :)
Yes treat each impeller as an individual unit, ie calculate for 1 impeller using the affinity laws and if the second impeller is the same diameter just double the first number to give you the total head. At the end of the day if the head achieved is…
Good response from BigInch in the other forum.
The head changes as the square of any speed change or impeller diameter change. Nothing new and no arguement to be had. Not sure what your fellow enginering is trying to say / prove - just point him in the direction of any basic pump book.
I just noticed the original date of posting - seems the poster has asked a question and hasn't the manners to acknowledge those trying to assist.
What is the foreseen problems with reverse run-away ? If you consider you have a problem with reverse run-away a back stop device will over come this problem.
Is the 6.73 M actual lift ( water level below the pump inlet)
Can be bigger but there is no reason that it MUST or SHOULD be bigger.
The inlet pipe work is sized to give a lowest economical pressure loss (friction loss) in accordance with the NPSHa / NPSHr considerations.of the pump unit.
Therefore, some times…
Profile Information
- Title
- Retired
- Company
- retired
- Specialties
- Pump hire, mining, paper industry, waste water,irrigation, deep wells, ground dewatering, engineering, marketing, training, application, maintenance, site trouble shooting.
- Education
- Engineering Diploma
- Past Companies & Brands
- Sykes pumps, Warman International, Allis Chalmers Pumps, Sala international, ITT Flygt
Comment Wall (3 comments)
- At 7:23am on March 2, 2010,
dawata ringor said…
- Hello,
Nice to meet you, how is everything, hope all is well with you. My name is Dawata Ringor,I found your contact and I picked interest to contact you. I've something very important which I would love to share with you privately, therefore, would advise you to kindly write me back on:(madam_dawata@hotmail.fr) so that I'll give you details. Waiting anxiously for your anticipated corporation,
Yours,
Madam Dawata.
Email me on: madam_dawata@hotmail.fr
- At 11:10am on July 7, 2009,
Charli Matthews, Pumps & Systems said… - Thanks for joining!
- At 6:20pm on July 2, 2009,
Chuck Lohre said…
- Hi Ian, Paul Lohre is my cousin. His Father was my Grandfather's brother. Hope things are well in Australia. My association with this group is that Vertiflo Pump Company is a client of ours. We're an advertising agency. Thanks for asking.
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