Adapter for RO filter

[spankyspam]

Not great at plumbing lol. This is what my feed water diverter looks like. Looks like I need an adapter. Do you know what size or which one?

 

[Peace River]

You should be able to get a John guest fitting, sometimes called a shark bite fitting, to adapt it to a quick connect to connect your RO line.

 

[Thumbster]

Take these pictures and the part you are holding in your hand to Lowe’s/menards/Home Depot or preferably a local plumbing supply store (they typically know what they’re doing) and tell them “I need to get from this, to that”.

You have a standard shut off under your sink. Shouldn’t be hard to find the parts.