RO Booster pump install (1 Viewer)

[decimal]

My RO system makes drinking water and has an “auto shut off” valve. The RO unit can be switched to make drinking water or DI water. I recently added a booster pump but was wondering if anyone knew whether to place the pressure switch for an ro booster pump before the auto shut off, somewhere in the middle or after?

 

[soymilk]

where are you putting the booster pump?

can you kinda draw out your system in ms paint?


booster pump should be installed after the prefilters and carbon blocks but before RO membrane.

 

[decimal]

Oh it’s kind of complicated. I have posted about it before but here a simple pic..

So it’s
Stage 1
Stage 2
Stage 3
Stage 3 exit into ASO
ASO RO to membrane
Membrane to waste and 3 way valve
3 way to either
ASO to tank or
3 way valve to DI

Whew!

Now where do I place the pressure sensor?

 

[soymilk]

i need to go look at mines again.

but i'd looks like the best place to put yours would be before the ASO. That way water only gets boosted if flow is moving.

 

[decimal]

I guess there could be some confusion about an ASO. The float valve we all know and use to stop the flow of water when it hits a certain level is also referred to as an Automatic Shut Off valve. The other ASO (the one I’m speaking about) is the ASO with a diaphragm inside of it. This has nothing to do with water level only with pressure. So when the system is flowing freely and there is no back pressure, the ASO remains open. Once the pressure builds up drinking water tank is full or water level pushes float valve up, the diaphragm closes and stops the RO unit from making more water.

Long story short, the sensor belongs on the last out of the ASO (diaphragm)