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are you sure the temp is ok if you don't know if the acid % is ok? I am not familiar with pvdf, but metal piping corrosion rates can very widely with temperature and concentration in the range you specify.

Is Advanced Reinforced Composites a company? Or do you know a vendor/contact for such a service?

Agreed. As far as the pump is concerned, I'm more concerned about hardened chunks of solids than loose trash. A strainer with small enough mesh to catch them just becomes a place for them to encrust and plug.

Thanks Glenpan, I would appreciate that article. You can send it to jcesen@mail.utexas.edu. Flowrate, about 300gpm, head, around 60 to 100ft, size, about like fine sand, but I think we get an occasional damaging chunk, or perhaps even a loose bolt or other trash. They draw on an open top...

We have rubber lined pumps in our wastewater system. They handle water with about 25% fine solids. pH is typically ~7, but it seems there may be occasional excursions or variances in the mud bed. The liner life is short (~ 6 months) and the liners are expensive (2-3k, parts only). I suspect...

in order of your points first of all... the pumps installed are well capable of that requirement, but I was only aware of it because of an earlier post that I think you made. secondly...there are three installed pumps. One is not capable of full load, but 2 are normally run and easily meet...

Dang, TD2K, I hope you're not spending so much time on me that you'll have to stay late on a Friday, but thanks. The dP corresponds with the Cv by my calculation, so I won't burden you with that. The valves don't really run full open, but around 65-75%, which ought to be pretty good. I'm...

Paragraph one) that's just what I'm getting at. It looks to me like the control valve was mis-sized. Paragraph 2&3) I had them shut down one just the other day. dP does not come down much. Just a few pounds. I went back and rechecked my work, and then let a computer recheck it too. Other...

Your assumptions on pressure are pretty close. Pump outlets are around 375, boilers are around 250. But where we normally operate, one pump is not quite enough, so we have to run 2. Two is way too much, and the pumps tend to overheat/cavitate/wear. The Cv of the control valves is pretty...

I have a boiler feedwater system with about a 25# pressure drop (calculated) but a total actual drop of about 120# due to the installed control valve. Is this reasonable? Controlability is important, we can't uncover the tubes, but that much pressure drop just seems ridiculous, and I could...