Tubing size for 6.5 g glass carboy

[engine3lt]

First time poster.

I am getting my equipment ready for my first batch (or two). I went out this morning and picked up some tubing to make blowoff tubes for my fermenters. Of course when I got home the 1.25OD tubing didn't fit the 6.5 g glass carboy I have. It fit the 6 g size like a glove. I've searched the forum but I'm not having any luck finding what size I need for the 6.5 g size. Anyone know right off the top of their head?

Thanks again. This is a great site. I've learned so much already from all of you.

 

[Beerthoven]

Just measure the diameter of the opening. That's what I did. Turns out the 1.25"OD tubing fits my 6.5 gallon glass carboy perfectly.

 

[s3n8]

The 1.25 OD tubing I got from Lowes fits in both my 6.5G and 5G glass carboys. It is a little more snug in the 5, but fits both fine.

 

[engine3lt]

Wish that was the case here. Really fits the 6g great but you can see air around the tube in the 6.5.

 

[engine3lt]

I never could find a blow off tube that fit my 6.5 gallon carboy. Since my first batch will be a hefe, I don't want to risk going without one.

Here's what I came up with: I cut the inside of a universal carboy bung out and pushed the blowoff tube into that. Then seated this in the carboy. You folks think this will work ok?

 

[s3n8]

As long as is seals up you should be fine.

I did a quick pressure test to verify mine, blow into tube, see if it holds pressure, sanitize and you are good to go.

 

[engine3lt]

Tried your blow test, and it held up fine. The only thing I can see that dislodges it is movement of the hose. Thanks.

 

[jds]

I don't see why it wouldn't work.

By the way, that's a cool fermenter stand. Nicely done.