Fitting to connect tube to pex

[iambob]

I’ve added an RO filter in my mechanical room which is directly below my kitchen. the RO output is through a 3/8 inch OD tube. My refrigerator and a drinking water faucet are connected to a 1/2 inch PEX pipe. I need to connect the 3/8 tube to the PEX, but have not found any suitable, RO safe, way to do it. A plastic John Guest PTC would be nice, but they don’t make one.

Any ideas appreciated!

Thanks.

 

[Twowaxhack]

I’m assuming the pex is 5/8” OD….

 

[Twowaxhack]

You’ll probably have to use two fittings.

Here’s your shopping list.

 

[iambob]

Thanks @Twowaxhack! Adding the shopping list was very helpful, and I appreciate it very much. The order is being processed now.

Bob

 

[iambob]

@Twowaxhack The two PTC fittings work great.

I did order the SuperSeal Pipe Insert as well, but didn't see that I needed it but was curious where a fitting like that would be used?

Thanks,
Bob

 

[Twowaxhack]

@Twowaxhack The two PTC fittings work great.

I did order the SuperSeal Pipe Insert as well, but didn't see that I needed it but was curious where a fitting like that would be used?

Thanks,
Bob

https://www.johnguest.com/gb/en/products/jg-speedfit/pipes/pipe-inserts/superseal-pipe-insert
You can read about it on this link.