RO/DI PSI Levels

[Mizu]

hello everyone, I just set up a stage 5 RO/DI system by atatching it to the bathroom sink. My TDS reading is at 0 for water going out however y PSI level is only at 25~? (I attached a picture for reference).

Is this acceptable?

Thanks!

 

[Malum Argenteum]

If you're getting the quantity and quality of water you need, then it is acceptable. But if the rejection rate or GPD isn't up to par then a booster pump will be needed to get the pressure to where it is supposed to be (50-60 psi).

 

[Mizu]

Ok great so its ok for now but I should upgrade in the future, got it thanks!

Also one more thing, im only using the cold water, should I turn on the warm water side in addition to the cold water to increase the water flow?

 

[DED65]

Use only the cold water. Your heated water will have more sediment to remove and will drastically shorten your filter life.

 

[Malum Argenteum]

Use only the cold water. Your heated water will have more sediment to remove and will drastically shorten your filter life.

Agreed, plus there's a risk that too-hot water would be provided (if, for example, there's a pressure drop on the cold line from someone running the garder hose or whatever) and destroy the membrane.

 

[Buckeye Hydro Verified Sponsor]

No... in a practical sense, your low pressure is not ok. Your membrane will function poorly, and your DI resin will exhaust too soon.

 

[Dmax]

Where is the gauge reading on the unit? I see an outlet arrow with a red 1/4" line and looks to be going to the gauge? Is that gauge reading PSI after the membrane?