Flooded Suction
Flooded Suction
(OP)
Good evening from Muscat,
After finding so many references related to the "flooded suction" term in process design literature, this particular subject is still not clear to me. Can somebody shed additional light in resolving this issue, regardless of the type of pump being employed in any service?
What does the term "flooded suction" mean, irrespectible of the pump type?
After finding so many references related to the "flooded suction" term in process design literature, this particular subject is still not clear to me. Can somebody shed additional light in resolving this issue, regardless of the type of pump being employed in any service?
What does the term "flooded suction" mean, irrespectible of the pump type?





RE: Flooded Suction
RE: Flooded Suction
sometimes it is specified as ample for the NPSH AVAILABLE so the required NPSH as specified by the pump supplier is generally lower enough (at least 1 meter difference).
In any case my recommendation is to calculate the NPSHavail and compare it to the required.
regards,
roker
RE: Flooded Suction
From Pumpworld:
RE: Flooded Suction
25362 is correct..... whenever the normal operating level of the liquid reserviour is above the pump centerline, it is considered "flooded suction"
The opposite of "flooded suction" is the case where the pump must pull the liquid up into the casing. This occurs whenever the pump is located above the NOL of the reservior. For example, "self-priming" pumps are located above the NOL and are normally NOT used in "flooded suction" service.
_MJC
RE: Flooded Suction
Doug
RE: Flooded Suction
Attached is his reply in form of Excel sheet. Very simple and 100% clear.
http://antwrp.gsfc.nasa.gov/apod/astropix.html
RE: Flooded Suction
rmw
RE: Flooded Suction
Please dont measure flooded suction height/pressure as NPSHa as it may well lead to pump problems, especially with increased temperatures etc.
Ash Fenn
www.cdrpumps.co.uk