RO Units: Parts and Their Functions

[RandalB]

Butch,
That's a 850ml/Minute flow restrictor, which means it allows that much water to pass at it's rated pressure. That's fine for a 75GPD membrane that's rated at higher pressure.

As far as the other goes, I'd need a picture to get an idea of what's going on.
Also include the brand of RO unit...

RandalB

[Butch]

Here's a pic Randal. See the blue RO line going from the tee to the water
shutoff valve. The blue line going left out of the picture from the tee is going
to the float valve in the holding tank. The yellow line on the top of the
water shutoff valve is coming from the outlet of the carbon filter. I thought
that when the float valve closed off, it built pressure in the blue line and would shut off the flow throught the yellow line to the membrane. If that is the way it's suppose to work...is the shut off valve sticking. Can I work on
something like that.

Butch

[RandalB]

Ahhh, A Kent unit. Gotta Love 'em.

It's either the shut-off solenoid or the check valve in the product fitting of the membrane housing. This is where the blue tube is connected to the membrane housing. Remove that fitting and blow into it. You should only be able to move air through it one way. If not, replace the check valve.

The other possibility is that the operating pressure is not high enough to activate the shut-off. What's your tap water pressure?


RandalB

[Butch]

Thanks Randal. I appreicate the info. Everything is working the way
if should be working. With the float cutting the flow, found a small leak
on the fitting at the storage barrel on the RO line. Explains why the pressure
was not cutting off the valve. Fixed leak now shuts completely off.

thanks
Bert

[BobB]

Randal, I am interested in a RO/DI unit for both drinking water and aquarium use. How much would it cost. 50GPD.

[RandalB]

Bob,
I'm not selling anything at the moment, I am in the process of moving.

RandalB

[Robert_Leonard]

Randalb am I missing something as am seeing no pics in this. Was it a victim of the forum going down? If it was that to bad was an excellent thread from when I read it before. Was looking through it again as was thinking on hooking mine up.

[RandalB]

It's actually in the library at www.simplydiscus.com with all the pictures Robert..

Feel free to ask questions when you finish perusing..

RandalB

[dorramide7]

Here's a picture of the inside of the cap. Note the small hole (lighter circle) up to the right. That's the inlet. The hole in the center is the outlet. Correct flow enters on the outside of the prefilter and is forced through the prefilter by water pressure and then out through the center of the cap.

In the clear portion of the housing, there is also a small ring that holds the prefilter in place during assembly. The correct method for installing the prefilter is to place it in the bottom of the housing, setting the prefilter on the ring and seating it firmly.
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[MKD]

hello guys,

I have this ro system installed under my kitchen sink and i replace the red/yellow tubes every 6 months and green/blue every year. By any chance, anyone know if i can re-use the media inside those tubes for discus canister filter? does it help anything?????

[phil47952]

I'm new to this forum and thinking about getting back into Discus after almost 40 years, my question, can RO/DI water be safe for discus?

[roundfishross]

yes when reconstatuted

[Joker43]

Where are the Pictures?.

[sfdiscus]

Hi - I just bought a CoralLife RO unit (that doesn't come with a water storage tank). Can this forum suggest a cost effective way to store water? What storage should I buy and how much to store up to 20G? thx

[LGelb]

Where are the Pictures?.

try here for the pics http://www.simplydiscus.com/library/...ro_parts.shtml