Pull to close valve seems stuck

[diy]

I have this pull to close valve. When I tried to pull it, it seems stuck. I am afraid to use too much force. If I use too much force, I will pull the whole thing out of the wall and create a big mess?

 

[diy]

I finally was able to pull with extra care not to make a mess. This pull to close system doesn't feel reliable to me.

 

[havasu]

They aren't, and should all be replaced since they are junk.

 

[GReynolds929]

Not to mention it's on CPVC which gets brittle as it ages. Glad it didn't break on you. I would treat it like glass and replace the shut off.