API 610 centrifugal pumps
API 610 centrifugal pumps
(OP)
Hi everyone,
Existing centrifugal pump is rated at 800 gpm.
The problem is that this pump have to go long distances to reach the tank and the measured flow rate is measured to be 25 - 400 gpm due to frictional losses in the fittings.
No datasheets or pump curve available - thus the question is what kind of calculations required to verify the flow?
Thanks,
Existing centrifugal pump is rated at 800 gpm.
The problem is that this pump have to go long distances to reach the tank and the measured flow rate is measured to be 25 - 400 gpm due to frictional losses in the fittings.
No datasheets or pump curve available - thus the question is what kind of calculations required to verify the flow?
Thanks,





RE: API 610 centrifugal pumps
If you can't set up a test rig yourself and increase flow through the pump by sending some back to the inlet or inlet tank.
I hope you meant 250 to 400 gpm. At 25gpm for an 800 rated unit you wouldn't have much of a pump left...
You need to calculate your system curve - all frictional losses and head losses /gains versus flowrate.
Many more details required to make any more sense of your issue.
My motto: Learn something new every day
Also: There's usually a good reason why everyone does it that way
RE: API 610 centrifugal pumps
RE: API 610 centrifugal pumps
Pump curve come from the pump vendor and is normally a downward curve from zero flow with a fairly long flat bit. Where the two intersect is your flow rate achievable for your system and pump combined.
My motto: Learn something new every day
Also: There's usually a good reason why everyone does it that way
RE: API 610 centrifugal pumps
My motto: Learn something new every day
Also: There's usually a good reason why everyone does it that way
RE: API 610 centrifugal pumps
It is a capital mistake to theorise before one has data. Insensibly one begins to twist facts to suit theories, instead of theories to suit facts. (Sherlock Holmes - A Scandal in Bohemia.)
RE: API 610 centrifugal pumps
http://www.engineeringtoolbox.com/pump-system-curv...