In Line Centrifugal Pumps
In Line Centrifugal Pumps
(OP)
Hi every body,
Can I use in line centrifugal pump to pump water from underground water tank to over head tank? The suction lift is about 10' and the total head is 90'and I want to use upvc pipe for transportation.
And further more that what should be the ideal distance between the elbow of suction line coming into the pump from underground tank and pumps's suction?
Can I use in line centrifugal pump to pump water from underground water tank to over head tank? The suction lift is about 10' and the total head is 90'and I want to use upvc pipe for transportation.
And further more that what should be the ideal distance between the elbow of suction line coming into the pump from underground tank and pumps's suction?





RE: In Line Centrifugal Pumps
2. Minimun of 5 diameters - 10 would be better.
RE: In Line Centrifugal Pumps
How do you plan to prime the pump initially?
RE: In Line Centrifugal Pumps
"And further more that what should be the ideal distance between the elbow of suction line coming into the pump from underground tank and pumps's suction?"
Artisi's answer to this question is:
"Minimun of 5 diameters - 10 would be better."
This is an "In-Line" pump according to Haniyah's original question. Now an "In-Line" pump Example:(http://
Let's say that the suction flange face is the reference point for this discussion. Downstream (the pump side) of the reference point the Flow turns down at almost 90 degrees, then 90 degrees horizontal and then 90 degrees to the vertical to the "Eye" of the impeller. All of this in the short span of less than the distance from the center-line of the pump to the face of the pump flange. That is a lot of twisting and flow turbulence.
So, my question is this. Why does Haniyah need 10 or even 5 diameters between the face of the pump flange and the first upstream elbow? I would recommend that a prudent cost effective layout of the piping is all that is required, considering (a) function, (b) the required fittings, flanges and valves and (c) proper consideration for flange loading and stress.
In my opinion, the "10 diameter Rule" is bogus for this application.
RE: In Line Centrifugal Pumps
Johnny Pellin