Compression valve

[sonic20]

Hello ,
I am trying to replace the toilet shut off valve and could not remove one part. (picture attached)
I have no idea about this and have't seen at any stores . Did any of you know this kind of part ?
How to replace this part ? Where to buy this part ?

Appreciate your help

 

[Matt30]

From what I can tell that's a push connect type valve.

Push the black ring forward
Push the valve body backward, all while pulling the valve off the pipe.

There should be some good videos on YouTube on how to remove these fittings

 

[CT18]

It looks like a 1/2" x 3/8" compression type fitting not a valve.

 

[TomFOhio]

Like Matt & CT said that is a push type fitting. Hold onto the brass fitting and pull back on the black piece. It will come off. If its
copper underneath the fitting I would put on a 5/8" X 3/8" compression angle valve. You can find this valve in any store or
plg supply house. Let us know how it turned out for you.

 

[sonic20]

Thank you for all the help . It's a push connect type fitting . (pro - called shark bite fitting)
The procedure to replace the fitting was exactly same as the one mentioned in the post reply .
I did end up in calling the pro to replace it . The copper pipe diameter is little bit smaller than the standard fitting .
The pro Sweat the Copper Pipe with compression fitting and connected to the shut of value .