1/2" barbed ball valve for vinyl tubing

[steppedinds]

Anybody know where I could find one of these local? Lowe's and Home Depot were a no go. I'm going to try the pet stores tomorrow. It's for my auto top-feed system and the first few halos are getting a little bit too much pressure. Going out of town tomorrow night so can't order them online. Any help would be greatly appreciated.
Thanks

link to setup in sig

 

[Mcjoint]

Try a local hydro store.

 

[steppedinds]

Try a local hydro store.

closet one is about 200 miles away