Plumbing Help Needed

[Bill333]

I'm hoping I can get some help with plumbing a water diverting line into the ATO feed on my Cade 1800. The Cade has an ATO reservoir in the back of the display tank, and the pipe/tubing assembly pictured below routes the fresh water down to a float valve in the sump:

What I'd like to do is put in a diversion line with an on/off valve that I could use to fill a nearby RODI container for the Mastertronic. I'm thinking that splicing a T into the flexible tubing section would probably be the way to go, but I'm not sure how to fit an on/off valve to the line coming from the T. Ideally I'd like the line going to the RODI container to be 1/4" PE tubing, but not sure where to get the necessary adapters. Or am I making this more complicated than it needs to be?

Any help would be appreciated!

 

[KrisReef]

https://www.supplyhouse.com/Spears-439-098-3-4-x-1-4-PVC-SCH-40-M-x-F-Bushing?utm_source=google_ad&utm_medium=shopping_neutral&utm_campaign=Shopping_Neutral_New_users&gad_source=1&gclid=Cj0KCQiAyKurBhD5ARIsALamXaFj38VQ7b21g7PUnHC2UyoRElxFm9l9AiUW96tco8vZ7hy5oVJktpwaAk99EALw_wcB

1/4" Tube OD White Polypropylene Bulkhead Union | U.S. Plastic Corp.

These fittings are food-grade and suitable for potable liquids and pure water applications, as well as being chemical resistant.

www.usplastic.com

Add a T, and a valve in front of these two parts. Note the tubing connection uses PVC compoenents. Some of these disconnects for pipe have metal, which I avoid around salt water. Hope this helps.

 

[DanTheReefer]

Just watch out for metric pipes, will be hard to find a T

 

[KrisReef]

Just watch out for metric pipes, will be hard to find a T

Ooo, good point!. Metric is a bear. I think BRS sells some adapter fittings for US (inch) sizes?

 

[Bill333]

Thanks you both for your help. The inline valve with the union fittings clearly says it's 1/2 inch and I believe the flexible tubing is 1/2 inch inside diameter. So maybe metric won't be a problem.

But what can I use to go from the 1/2 inch barb on the T to the 3/4 to 1/4 adapter?