I need a part for a 1" flat disc?

[Jag1980]

I need something that can hold a 1" flat disc with a exposed end and a way to put a barb fitting on the other end so I can connect a air line to it.

Any suggestions on what parts to look for?

The disc needs to fit very tightly to hold pressure.
Disc thickness is a little bit less then a 1/4"

Something like this shown here, but being able to connect a air line fitting.
http://www.idealtruevalue.com/servlet/the-10053/Detail

I have no idea where to even look for something like this?

[jmhart]

Look up irrigation supply places in your area. Take your disc to them and I'm sure they can help you put something together. I'm sure o-rings will be involved.

Google "Marysville Irrigation Supply" and whatever big city is closest and see what pops up.

[kj5kb]

I see the fitting, but I'm confused with the description. What's the application?

Do you want to run air thru a hole in the disc, or use the disc to block the airflow?

I "assuming" you mean ~3/16" aquarium airline? or larger line?

OK, I'm guessing maybe...DIY CO2 diffuser?