low NPSH pump
low NPSH pump
(OP)
hi guys,
i am looking for pump with having corrisive fluid which contains KHF2 and traces of HF at 60 gpm, 51.3 ft head but npsha is 4.6 only as pumping fluid have vapour pressure 12.27 psia.
any body can suggest pump for this application!
i am looking for pump with having corrisive fluid which contains KHF2 and traces of HF at 60 gpm, 51.3 ft head but npsha is 4.6 only as pumping fluid have vapour pressure 12.27 psia.
any body can suggest pump for this application!





RE: low NPSH pump
http://virtualpipeline.spaces.msn.com
RE: low NPSH pump
RE: low NPSH pump
NPSHa equals to 4.6ft, is very low but there
is some special designs like double casing vertically
suspended pump that can handle.
In other cases, uses an special eye suction design or
an inductor could be enough.
Other alternative is run a pump with the lowest as possible.
There are several options, which is corrects depends of Q and TDH, Nss, Ns.
Potassium hydrogen difluoride is an unusual fluid.
If you don not have an selected pump material yet. You know it is very corrosive, you should use a metal with PREN more than 40.
Regards,
Luis Lopez
RE: low NPSH pump
RE: low NPSH pump
RE: low NPSH pump
I don't think the .5 ft NPSH improvement would be worth it.
As suggested above, contact your local Goulds guy; he/she can help you out. They have selection software on the web at www.gouldspumps.com (you can also find your local rep there); the ANSI pumps are model 3196, the DIN pumps are model ICI.