RODI speed

[gmann]

Hello,

I just purchased a RODI unit and got all excited thinking id get awesome water outta it. After the install I realized that the good water return line speed is basically a slow drip if that at all. Before I go out and buy a booster, is that considered normal? Im freaking out because I normally do a 20 gallon wc and at the rate of a slow drip it'll now take forever to fill up my garbage can ( 1 day im guessing)

Thanks

[hackerberry]

hi gmann,

My RO dealer suggested a use of a booster pump to extend the life of the membrane. A cheaper alternative is a permeate pump that you can get from water supply stores.

"Permeate Pump is a non-electrical device which is powered only by the hydraulic energy of brine water. The Permeate Pump forces product water into the storage tank, reducing membrane back pressure while maximizing available feed pressure. This pump drastically improves the efficiency of Reverse Osmosis systems and can reduce waste water up to 80%."

hb

[mike31154]

More info about your unit, 75 gpd membrane? 50? 100? How many stages, sediment filters? Do you have any idea what your source water pressure is?

I get a steady flow out of my 75 gpd system with incoming water pressure of just over 100 psi. More than just a drip. Also do water changes of 20 to 23 gallons. Takes about 5 hours or so to fill my mixing container.

Before you run out & buy booster/permeate pumps, confirm your water pressure. A pressure gauge is a very useful component to have on any RO system (I have 2). Once you've checked the pressure, see if there's a pressure regulating valve somewhere in your house plumbing, should be not too far downstream of your main water shut off valve. Most PRVs are adjustable & you may be able to crank up the pressure. Ensure all your plumbing is in good shape before you get too carried away.

[Craigdillman]

Yea get a booster

[SteveCGY]

Hello,

I just purchased a RODI unit and got all excited thinking id get awesome water outta it. After the install I realized that the good water return line speed is basically a slow drip if that at all. Before I go out and buy a booster, is that considered normal? Im freaking out because I normally do a 20 gallon wc and at the rate of a slow drip it'll now take forever to fill up my garbage can ( 1 day im guessing)

Thanks

Mine takes 4hrs to fill a 5 gallon jug so a day for a garbage can seems about right to me

[duncangweller]

I get a mere 20psi through my ro/di. I tried turning my prv to no avail. I'll get a booster when I get time

[hillegom]

As said if your house pressure is low, less than 60 psi, you need to bump it up.
If you increase the house pressure, especially make sure your washing machine hoses are in good shape.
I have a permeate pump and love it. With that pump, you get better than 1:4
RO:waste And it speeds up the delivery time.

[canadianbudz604]

I get a mere 20psi through my ro/di. I tried turning my prv to no avail. I'll get a booster when I get time

Me and dunc were in the same boat. 20psi out of the tap no matter what I did, so I bought a booster pump now 75psi with a vertex 100gpd ro/di. The filters are going past 100 gallons of water made and still testing 0ppm. Buy a booster pump you wont regret it.

[gmann]

thanks for the feedback everyone. it seems i am getting a booster pump.

[duncangweller]

I've never even heard of a permeate pump. I'm looking into it asap.

Does it boost pressure like a booster? Just without electricity?

[input80]

Hey Dietmar, where do I get one & care to help me hook it up please?

[duncangweller]

Dietmar, tried to PM you but inbox is full. Where did you buy your permeate pump?

Ta,
Dunc

[GoFish]

This permeate pump looks like a cool idea. I like how it drastically cuts down on waste water. If anyone finds them in vancouver or somewhere with reasonable shipping and price please update

[input80]

hillegom is @ work today & should reply this evening. He said to look up ERP1000, I believe.

[duncangweller]

I can see them online, I was just curious if he found one locally

[hillegom]

Cleared up my inbox a little.
I really like my permeate pump for the reasons outlined in the link.
I did not buy mine locally, didn't find one at the time (at least 12 yrs ago). I bought it here:
https://filterdirect.com/product_info.php?cPath=27&products_id=164&osCsid=4cc391e44adde5eaee5206903c387b38

[hillegom]

Hey Dietmar, where do I get one & care to help me hook it up please?

I'll help you hook it up. NP

[duncangweller]

I have found a permeate pump in Canada for $65.97 which seems to be a good price as they are 49.95-59.95 USD elsewhere. I am going to order one. Would Vancity or Ian like to split shipping?

Let me know
Dunc