RODI Bypass valve

[boisblancboy]

So on a lot of the RODI units you have a flush valve for the membrane and you watch your TDS meter till is drops and stabilizes. Is there any reason no to put a 3 way bypass valve between the TDS meter and the first canister of DI? Wouldn’t that help with any of the TDS creep from anything getting to the DI?

 

[t5Nitro]

I think as long as you put the 3-way ball valve between the RO membrane and the first DI cannister, then you're good to go for manual flush.

 

[KStatefan]

So on a lot of the RODI units you have a flush valve for the membrane and you watch your TDS meter till is drops and stabilizes. Is there any reason no to put a 3 way bypass valve between the TDS meter and the first canister of DI? Wouldn’t that help with any of the TDS creep from anything getting to the DI?

That is how you get rid of TDS creep. A flush valve does not remove TDS creep. TDS creep is on the clean side of the membrane and you are flushing the dirty side.

 

[boisblancboy]

That is how you get rid of TDS creep. A flush valve does not remove TDS creep. TDS creep is on the clean side of the membrane and you are flushing the dirty side.

What exactly does the flush valve do then?

 

[KStatefan]

What exactly does the flush valve do then?

Remove build up on the dirty side is what they are promoted to do.

Let's Talk RO & RODI

I wanted to introduce, or re-introduce some common jargon pertaining to RO and RODI systems that few people in the hobby commonly use. PERMEATE - the water that has made its way through the RO membrane. Often called "RO water." In most situations, the TDS of permeate should be 5% or less of...

www.reef2reef.com

 

[boisblancboy]

Remove build up on the dirty side is what they are promoted to do.

Let's Talk RO & RODI

I wanted to introduce, or re-introduce some common jargon pertaining to RO and RODI systems that few people in the hobby commonly use. PERMEATE - the water that has made its way through the RO membrane. Often called "RO water." In most situations, the TDS of permeate should be 5% or less of...

www.reef2reef.com

I appreciate the link!