Water line to fridge had a saddle valve, saddle valve started leaking so took it out and repaired pipe. Now trying to figure out how to reconnect fridge line. I have 1/2 inch copper under the sink and the pex line at the fridge says 1/8 on it. I can't find any adapters that go from 1/2 to 1/8,or even 1/4 to 1/8. Any help would be appreciated, thanks!

  • That is why they make saddle valves. You could pit a T in line and get several adapters to make it down to 1/8. Are you sure of the size most of the ones I have installed are 1/4"
    – Ed Beal
    Mar 1, 2016 at 14:42
  • @EdBeal saddle valves are no good. They usually just end up leaking. In many areas, licensed plumbers are not even allowed to install them. Mar 1, 2016 at 15:53
  • Ed beal, the pex coming out of the fridge has 1/8" printed on it. Maybe the actual connection at the fridge is 1/4, but the line currently connected is 1/8. Mar 1, 2016 at 17:15
  • What is the make and model of the fridge? What does the shutoff valve for the sink look like (what size is the outlet)?
    – Tester101
    Mar 1, 2016 at 20:31

3 Answers 3


If you want to tee off the 1/2" copper line, then you can start with something like this.

enter image description here

Once you get down to 1/4" copper tube, you can reduce further to 1/8" tube as follows.

enter image description here

If you want to tee off after the sink shutoff valve, we'll need to know what size the outlet is on the valve.


Dont use plastic water lines going to fridge I see them leak all the time. Use 1/4 flexible copper with compression fittings or 1/4 flexible braided stainless steel supply line(like going to your faucet) I have seen them up to 20' long.

The easiest ways is to install a compression nut T. You unscrew your supply line from your sink to the shut off valve and screw in the compression nut T. Your water line from sink and icemaker will both screw into this. Just take a trip your local hardware store and ask for help this is a very common issue. enter image description here

  • OP states that the line to the fridge is 1/8", not 1/4".
    – Tester101
    Mar 1, 2016 at 20:54
  • Refridgetors uses 1/4 compression for water maker.
    – justin j
    Mar 2, 2016 at 22:15
  • I agree that that's the common convention, however, the OP specifically said that it's 1/8".
    – Tester101
    Mar 2, 2016 at 22:26
  • Pex tub says 1/8 on it but that is inside diameter. The line comes with a 1/4 compression fitting on ends just like a stainless steel braided line. Your not suppose to cut the line if he did he needs new line.
    – justin j
    Mar 2, 2016 at 22:36
  • A pex water line is strong and safe to use. I was thinking of cheap plastic lines.
    – justin j
    Mar 2, 2016 at 22:40

I ended up getting a 1/2 to 1/4 SharkBite adapter, then a 1/4 to 1/4 stainless steel line to connect to the adapter on the pex. The pex does say 1/8 on it, but one of the posters correctly pointed out that's an inside diameter. Thanks all!

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct.

Not the answer you're looking for? Browse other questions tagged or ask your own question.