My new RODI unit is HUGE!!

funman1

Active member
I just got my new Typhoon III in today and it's frikin big and heavy!!!

They looked so small from the pictures, and what I saw at home depot.

It's a 5 stage RODI 75 GPD

Only problem is that my water pressure here is WAY too high, I shut off the valve at 95 PSI before it could go any higher, casue the unit is only rated at 80 PSI.

Guess I will have to go get a small pressure regulator.
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What's the PSI where you are??
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~Steve~
 
We have a pressure regulator on our municipal water line outside where it enters the house. I think it's set at something like 75 psi. At our old place in Orangevale we were about 90!
 
My water pressure here pegs (>90) my pressure gauge when I have the bypass for the RO unit closed. But as far as I can tell this provides the best output to brine ratio. When bypass is open pressure drops to around 65-70psi. Keep in mind, I've never actually calibrated my gauge but generaly they have an error margin of 5%.
 
Opps forgot I got a new pressure gauge. This one actually only goes up to 60psi on the gauge face. So instead it pegs >60 psi and idles in bypass mode around 45-50 psi. So my water pressure is somewhere around 70-80 psi by my estimates.

My apologies.

Chris
 
Yes, bypass to my knowledge is only supposed to be used for startup, shutdown, and about every to every other hour for about 20-40 secs to blow off any accumulated particles on the outer portion of the membrane thereby increasing performance and membrane life. Since my pressure gauge pegs during normal ops I used that as a reference to my operating pressure. Apparently the 'bypass' is supposed to be sized for the RO membrane and the expected water pressure. Temp of the water and membrane play a part in efficiency as well.

As it is the RO unit 'wastes' upwards of 3 gal brine to every 1 gal pure it produces. From what I understand, you can reduce waste by adding a particular pump that allows the unit to operate more efficently if ran more often. I attach mine to a hose about every two weeks to a month and make enough water for make-up and changes. Then I leave it idle until more is needed.

Oh how I long to have a house where I can have a dedicated fish room. How luck you people who have them are!!!;)
 
Also when I lived up north in Chico I was within 500 yds of a pump station. My pressure there was around 90 psi. I ran mine there for over a year with no problems.

I too would recommend a presure regulator but if not operate at your own risk. I know the screw-on vessels can handle up to 100psi... now as for your RO membrane... that is probably the weak link.

Chris
 
yeah I will put the reg on when it comes..
although we are moving in two weeks and I don't know what the water pressure is there yet.
 
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