Heres what I have, What do I need

[jamest22]

I have two primary CO2 regulators. one dual guage and one single gauge. I want to have the single guage feed the dual guage from outside the kegerator.

It seems to me that all I need to do is replace the tank connector on the dual guage with a barbed fitting. Where can I get this part and is there anything I am missing?

I am running 5/16" ID gas hose.

Here are my regulators:

 

[OntarioBeerKegs]

Sorry, I must be missing something. Unless you plan to split the gas before the regulator inside the fridge why would you want that configuration?

Or maybe you plan to carb outside off of one tanK?

 

[jamest22]

I want to move the tank out of the fridge and run only a single co2 line in while still having two independent pressure settings

 

[boogyman]

I don't think it's as easy as just putting a barb fitting on your dual gauge. That dual gauge was made to connect directly to a tank. You *might* be able to find an adapter somewhere like this: http://morebeer.com/view_product/16208/102238/Shut_Off_Check_Ball_Valve but that fitting has a check valve that's going the wrong way.

Most people have a secondary regulator like this: http://morebeer.com/view_product/16194/102237/Secondary_Regulator_-_2_Way

With all that said, why do you need to connect the dual regulator to the primary? you might as well just connect the dual regulator directly to the tank (and not use the single) -- you'll end up with 2 different pressure outputs either way.