"If you want to experiment, you can put/fit/cram a big a** 1 inch tube at the pump inlet, but I doubt that would have any effect."
Ben
is that an opinion ?
or do you have some actual experience, and measurements, upon which you are basing the above ?
(did you take the effort to read the linked to thread ?)
jtroutma is asking for assistance
when he tells you his flow rate,
what are you going to do with that info ?
give him some BS about line velocity ?
-> the problem is at the pump inlet
do you know what NPSHA is about ? did you follow g_f's
link to pump info ?
(it is apparent you did not)
jtroutma
close-couple your res to the pump inlet with as big a pipe as you can (and I mean big), eliminate that ell if at all possible