Booster pump install. Where?
 

So I just wanted to make sure I had this correct.

Bought an aquatec 8800 booster pump for my BRS 75gpd RODI unit.

I've read that you want to install the booster pump after the sediment filter and carbon block? Which would put the booster pump right before my RO membrane. Now I'm assuming I want it before the pressure gauge.

http://uploads.tapatalk-cdn.com/2016...007341a687.jpg

http://uploads.tapatalk-cdn.com/2016...e2f7bba9a8.jpg

http://uploads.tapatalk-cdn.com/2016...badd30bc61.jpg

Where my finger is pointing, would that be the best install spot?

Thanks.


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I have mine after the filters but before everything else.

Correct; install between filters and RO Membrane with the gauge after the booster pump.
Make sure your gauge is glycerin filled type and not a dry gauge.

Why is it important to use the glycerin filled type gauge?

Glycerine gauge doesn't bounce around.

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I have mine before the whole thing. But I'm also running a sediment filter before it

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This is how I have mine set up also. This is an old pic, with the old pump. The new pump is exactly like the OP's.

http://i150.photobucket.com/albums/s...s/d51cef9e.jpg

A non-liquid filled gauge with a booster pump will is unreadable due to the rapid large swings and will break fairly quickly.

I also have an extra cartridge with an inline TDS meter I'll be installing once I can make this more permanent. Would it be better to use that extra cartridge as an additional DI stage or as a pre filter before the booster pump like wild man has?


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If you install the pump between the filters and the RO membrane, your pump is already protected against sediment. The other reason for installing after the filters is those filter housings are the weakest link (strength wise) in the system. No reason to subject them to higher pressure.
Take a read through this thread.

http://www.reefcentral.com/forums/sh....php?t=2356537

Thank you! Is 80-85 psi too high?


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80 is perfect

I second the glycerin filled gauge. My air one was always loud and finally died, the glycerin one is so quite and stable. Cost more, but it'll last longer

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I have never had an issue with leaks due to pressure. I run at 75-80, which is not much more than the house pressure of 55-60.

Isn't a booster pump generally used to raise a lower than average pressure up to an average/correct pressure? So the filter housings wouldn't be subjected to higher pressure, but rather the same pressure as normal systems?

I don't believe it is likely to happen but the potential exists. I'mean just sharing what the recommendation is as a best practice.

The booster pump will increase pressure downstream of the pump. If installed before the filters, the filter housings and ro membrane will see the "boosted" pressure. If booster pump is installed after the filters, the filter housings will see incoming water pressure, not the pump discharge pressure.

Right on the money Don - someone has been paying attention!

Here you go. The diagram below includes a number of booster-pump-related components - you may not have them all.
http://i224.photobucket.com/albums/d...ps2e273a64.png

It's not necessarily leaks we are concerned about here. Unless you're including the big-leak-all-at-once. Here's what happened to a competitor's housing when it was over-tightened and couldn't stand the pressure:
http://i224.photobucket.com/albums/d...psd54a5e8d.jpg

Russ