Hi everyone,   I need coupling alignment formula  for pumps. Urgently. Thank you in advance. Take care yourself.   Serhat KOLBAŞI Hi everyone, I need...
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Juned Ansari
firdousdream001
Apr 30, 2012 9:54 am
There is no formula as such. To me, they are simple trigonometric relationships. Other members can comment more. Regards, Juned Ansari Sr. Technical Services...
292
Rod.Elay.Rohy
maf_eng2008
May 3, 2012 5:13 pm
Hello all,, How are you?.I need your help please.Can you tell me what is the sufficient information i'll need to select a pump?.How to determine the pump flow...
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Yoseph
cahlanang84
May 4, 2012 1:23 am
Dear All, Does anyone here know about dispersant pump used in ship/vessel? Would you share to me about it? Many thanks before... Regards Yoseph...
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Muhammad Asif
engr.asifsohail@...
May 15, 2012 11:32 am
... ............................................ HI all There is no formula for alignment.........
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briangrenier2
briangrenier2@...
Jun 10, 2012 12:43 pm
A friend made some interesting statements that I could use some help with...the discussion started at: ...
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Jacques
jchaurette
Jun 10, 2012 1:04 pm
If you are dumping lower that the pump discharge, there will be a gain in energy, the static head will be negative instead of positive. The total head of the...
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alrehmat
alrehmat.net...
Jul 5, 2012 12:10 pm
298
briangrenier2
briangrenier2@...
Jul 5, 2012 12:10 pm
1. So the dump side would need to be lower than pump side for a gain? 2. Would static head be subtracted from total head to the extent that the discharge pipe...
299
briangrenier2
briangrenier2@...
Jul 6, 2012 12:56 am
Is this true even if the pump is submersed? Would the negative static head gain only be true to the portion that the discharge is above the water level?...
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Jacques
jchaurette
Jul 6, 2012 9:19 pm
Not sure what you mean in no. 2, if the staic head is very high negatively this could mean that you do not need a pump and gravity can do all the work for you....
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Jacques
jchaurette
Jul 6, 2012 9:19 pm
I'm sorry, I lost the thread here, can you re-phrase the question and put a little more background info into it? Jacques...
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Jacques
jchaurette
Jul 6, 2012 9:19 pm
I am sorry, you are asking for way too much information. Do yourself a favor, go to pumpfundamentals.com, download everything that is pertinent, analyze it and...
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briangrenier2
briangrenier2@...
Jul 8, 2012 12:43 am
I am not sure about the negative static head below the water level in this open loop pumping scenario: Depth to water = zero Depth to submersible pump from...
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Jacques
jchaurette
Jul 8, 2012 12:50 am
The static head has to calculated based on the level of the discharge lake or tank fluid surface. It does not matter how deep the pipe discharge end is. ...
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Jane E. Thompson ~ In...
bluejeansbbyg@...
Jul 11, 2012 3:51 pm
My spa that I am building from scratch runs 1.5" flex. The Balboa pump and Spak Pak that I am interested in purchasing are 2" at the intake and discharge...
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Jacques
jchaurette
Jul 11, 2012 5:39 pm
Hey bluejeans, I don't think you need worry, there will be an additional pressure drop due to the reducer which will decrease the flow slightly. On the suction...
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siroos tahery
siroos_tahery
Jul 12, 2012 1:16 pm
Dear Jane As long as you you can tolerate less flow in your building , reducing the suction and discharge of the pump by 0.5" does not make any difficulty for ...
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fahadr
fahad_2_0
Jul 26, 2012 7:21 pm
where specifically are foot valves installed?are they intrinsic to vertical inline pumps? how can they be responsible for air lock in the suction line?in what ...
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Jacques
jchaurette
Jul 26, 2012 7:25 pm
They are typically installed on horizontal pumps that have a suction line going downward into a sump for example. They are located at the tank end of the...
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fahadr
fahad_2_0
Jul 27, 2012 8:10 pm
yes sir but how do they work?any animation you got?what are its types?.and how do they get OUT of ORDER?what specifically goes wrong in them?arent they EXACTLY...
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Jacques
jchaurette
Jul 27, 2012 8:23 pm
Just google foot valve, you will see many, should be some on my web site also. They have the same function as a check valve and are normally the same size as...
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Jacques
jchaurette
Jul 27, 2012 8:34 pm
You have uploaded a picture of the pumps. I see the suction is going through the floor, no doubt these are the pumps with the foot valve. These pumps seem to...
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Jacques
jchaurette
Jul 27, 2012 8:46 pm
I think if you had a pressure (positive and negative pressure capability) gauge installed on the suction side of the pump you would be able to determine...
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fahadr
fahad_2_0
Jul 28, 2012 11:28 pm
hello...the problem arose when we received a compaint from the offices of a building of unavailibility of water.we rushed to this pump room and found the 1st...
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Jacques
jchaurette
Jul 28, 2012 11:35 pm
The foot valve is intended to stop water from getting out of the suction pipe when the pump is shut off. Not to stop air from getting into the suction pipe...
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Jacques
jchaurette
Jul 30, 2012 5:12 pm
Hello everyone, has anyone done any android apps out there? I am planning to start a few, beginning with something simple like a calculator that gives head vs....
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Jacques
jchaurette
Jul 30, 2012 5:44 pm
Heres' another couple of apps that might be interesting. 1. Pipe size calculation based on velocity. We know what the typical speed for fluid flow should be on...
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Jacques
jchaurette
Jul 30, 2012 6:51 pm
Something else you may want to check is the amount of submergence avaible from the entrance of the check valve to the liquid surface, if insufficient you will...
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Jacques
jchaurette
Jul 30, 2012 7:04 pm
Ok, so these 5 apps will be packaged together as a suite: 1. Head to pressure 2. Pipe diameter vs. flow 3. Submergence height vs. flow and diameter 4. pump...
