1/2" copper to RODI fitting

jepuskar · Jun 14, 2023

Hi, I do my own plumbing..for better or worse...and I am struggling here with what is seemingly a very basic connection. I have a 1/2" copper connection that I need to convert to my 1/4" rodi tubing for inlet. The attached picture is what I need to do..and is a pic from my homes RO unit.

I currently have a compression fitting on there just like the one pictured, but I purchased one with a 1/4" outlet...then I bought a 1/4" FPT to 1/4" mur lock fitting and it just doesnt thread right. Actually, I have purchased about 3-4 different adapters and nothing works. Very frustrating.

If someone can provide a link or something so I can move on with my stalled new build I would greatly appreciate it.

Snoopy 67 · Jun 14, 2023

Not exactly what you want but I use this on a cold water line under the sink, 3/8x3/8x1/4.
There are some 1/2" fittings here.https://www.amazon.com/s?k=angle+stop+valve+john+guest&adgrpid=1341404806285178&hvadid=83837880398049&hvbmt=be&hvdev=c&hvlocphy=59397&hvnetw=o&hvqmt=e&hvtargid=kwd-83838201628747%3Aloc-190&hydadcr=12647_10598411&tag=mh0b-20&ref=pd_sl_4gf4xto8d0_e

Amazon-John Guest Angle Stop Valve

Saltyreef · Jun 14, 2023

If you still have the original compression fitting for the 1/4" outlet, just connect the tubing directly to that.

Be gentle with tightening it due to the brass ferrule and it should seal without issue.

Otherwise, buy a new valve like this from the local big box store. You might be able to get away with just using the ferrule and compression nut from the new box.

BrassCraft 1/2 in. Compression Inlet x 1/4 in. Compression Outlet 1/4-Turn Angle Valve G2CR09X C1 - The Home Depot

This 1/2 in. Compression Inlet x 1/4 in. Compression Outlet 1/4-Turn Angle Valve helps control water flow to your household plumbing fixtures. It's designed to be installed where the pipe enters from the wall and it features a 90-degree turn handle to stop the flow of water when needed. It's...

www.homedepot.com

jepuskar · Jun 14, 2023

Saltyreef said:
If you still have the original compression fitting for the 1/4" outlet, just connect the tubing directly to that.

Be gentle with tightening it due to the brass ferrule and it should seal without issue.

Otherwise, buy a new valve like this from the local big box store. You might be able to get away with just using the ferrule and compression nut from the new box.

BrassCraft 1/2 in. Compression Inlet x 1/4 in. Compression Outlet 1/4-Turn Angle Valve G2CR09X C1 - The Home Depot

This 1/2 in. Compression Inlet x 1/4 in. Compression Outlet 1/4-Turn Angle Valve helps control water flow to your household plumbing fixtures. It's designed to be installed where the pipe enters from the wall and it features a 90-degree turn handle to stop the flow of water when needed. It's...

www.homedepot.com

Ohh man....that is embarrassing. I probably threw that out...ohh well...I'll get another one. thank you very much...I don't think I would have thought of that...was fixated on an adapter.

Blue Spot Octopus · Jun 14, 2023

I went to a good Ace Hardware because my new valve was leaking at the RO tubing, so I was able to buy another compression fitting, only cents.

BZOFIQ · Jun 14, 2023

For future use.

You can also use this with a bypass or just cap the bypass with a small cap from HD

Feedwater Fittings

At Buckeye Hydro we specialize in providing the highest quality water filtration systems and accessories for every potential need.

www.buckeyehydro.com

jepuskar · Jun 16, 2023

Saltyreef said:
If you still have the original compression fitting for the 1/4" outlet, just connect the tubing directly to that.

Be gentle with tightening it due to the brass ferrule and it should seal without issue.

Otherwise, buy a new valve like this from the local big box store. You might be able to get away with just using the ferrule and compression nut from the new box.

BrassCraft 1/2 in. Compression Inlet x 1/4 in. Compression Outlet 1/4-Turn Angle Valve G2CR09X C1 - The Home Depot

This 1/2 in. Compression Inlet x 1/4 in. Compression Outlet 1/4-Turn Angle Valve helps control water flow to your household plumbing fixtures. It's designed to be installed where the pipe enters from the wall and it features a 90-degree turn handle to stop the flow of water when needed. It's...

www.homedepot.com

Thank you for that response. As always I made a mountain out of a mole hill. Put on a compression fitting, snugged it down and good to go. Now on to my next procrastination.

BZOFIQ · Jun 16, 2023

jepuskar said:
Thank you for that response. As always I made a mountain out of a mole hill. Put on a compression fitting, snugged it down and good to go. Now on to my next procrastination.

wha' no pictures?