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The first bit of water that comes out of an RO membrane when it starts has a higher level of TDS (called TDS creep). People use this valve on the line between the RO membrane and the DI resin so that they can divert off that first gallon or two of higher TDS water.
I have included a link to our instruction page below. In short you will hold down the murlok toothed gasket (part of the fitting that moves) With one hand or thumb and pull and twist the tubing out like with a finger trap. Feel free to let us know if you have any further questions!
You wouldn't need this valve specifically but it would be a good option. Otherwise you could use a tee and a pair of inline ball valves (one for each line) as well.
Three way ball valve with John Guest 1/4" push connect fitting.
- John Guest Material: PVC, EPDM
- Dimensions: 2-3/8" x 2-11/16"
- Max PSI:125
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A must have! By Eric on 2/22/2017Eric would recommend this product to a friendBought this valve to have the option of making RO for drinking or RODI water for my reef. Install was a breeze and the quality is actually more than I expected. Solid stiurdy valve that I'm sure I'll get many yes if use from.
Works as expected By Enrique on 11/25/2016Enrique would recommend this product to a friendSimple and effective, no problems whatsoever. Used on an apex dos doing waterchanges to be able to calibrate dos without removing my RO lines.
good valve, very happy By dunk on 8/27/2016dunk would recommend this product to a friendbought it to 3 way my ATO - very happy
Great three-way valve By Shawn S on 1/9/2016Shawn S would recommend this product to a friendAdded this 3 way valve to direct the RO water to either salt-water or fresh-water bins. Quick and easy hookup to the 1/4" tubing, and works as expected. Great product.
High Quality By Patrick on 12/28/2015Patrick would recommend this product to a friendI use this to drain the high TDS water before my DI cartridge when I first start my RO system. Sure beats using a "T" and two valves. It seems really nice. I wouldn't be surprised if it lasts forever.
Great product! By Amy on 12/15/2015Amy would recommend this product to a friendUsing this to split my RO/DI water into a fresh and saltwater holding barrel. Went to Home Depot since I wanted it fast and they had nothing (unless you want to pay about $30 to rig a bunch of stuff to work) Ordered from BRS and was delivered within a couple of days. Fast and efficient. Highly recommend.
Great Product By Carole on 12/5/2015Carole would recommend this product to a friendEasy to use. Easy to install. I use it to divert RO/DI water from my salt mixing station to my RO/DI storage container and back again.
works great By reefer matt on 10/10/2015reefer matt would recommend this product to a friendThis valve allows me to run through my di fir my reef tank or ro only for my kids crayfish tank and ro drinking water to my sink.
Just installed this on my new RO DI... it's not working By Stephen on 9/30/2015Stephen would recommend this product to a friendI may be doing something wrong, but it's seeming more that I have a faulty unit... water will only come out the bottom... first thought the DI was the problem, but tested the main line of the "tee" by disconnecting it from the DI and have the same problem. Would like to know if anyone else came across this and if there's something I need to do differently. Thanks... I gave it a three because I had to pick a star... hope to be saying five stars once I figure this out.
Good quality By Kathryn on 8/31/2015Kathryn would recommend this product to a friendI got this to work with my RODI system, to switch between drinking and tank water. It is well built and easy to install. I have no doubt this will last a long time.
Great Valve For Diverting RO Line By Jon on 7/20/2015Jon would recommend this product to a friendI mainly got this valve to divert product water line when flushing the system instead of burning through resin when flushing the system. If you going to do the same as I did I would recommend by an RO tube divider to connect your waste water with the diverted product line so when flushing the system there isn't two separate lines being used and it's a lot more neat and tidy.
Perfect By Joshua on 7/10/2015Joshua would recommend this product to a friendgot this for an rodi system to switch between ro water for drinking and di water for fish tank works great no flow back between directions and no need for check valves like you would need for a standard valve