modified fermentation cap

[Islandboy85]

I'm going to build my own fermentation cap like the one from brewers hardware, but is rather weld a ball lock gas port to it so I can also use a sounding valve. Maybe a dumb question, but are the ball lock fittings stainless? I assume that they are.

 

[hopsalot]

you can buy stainless ball valves as well as brass. stainless are usually harder to find

 

[horseinmay]

They are stainless. I think instead of welding on the Ball lock fitting, you would just need to weld on the threaded post.

 

[Islandboy85]

They are stainless. I think instead of welding on the Ball lock fitting, you would just need to weld on the threaded post.

I was thinking this would be perfect.
http://www.austinhomebrew.com/product_info.php?products_id=10669

 

[Jbear]

I agree with horseinmay, you should weld a threaded post on. Without the post, there is nothing to hold the poppet in place so you'd have a permanently open port with no way to seal it up.

 

[Islandboy85]

I agree with horseinmay, you should weld a threaded post on. Without the post, there is nothing to hold the poppet in place so you'd have a permanently open port with no way to seal it up.

Other than destroying a good keg, where can I get a post? I saw some corney kegs are 9/16-18. Is that a flared fitting?

 

[Jbear]

I'm pretty sure this would work for what you are trying to do. It incorporates the o-ring that would normally be around the dip tube so you have a good seal when you thread the ball-lock fitting on:

Adapter for Cornelius Keg Posts 1/4" FFL x 19/32"-18 : Northern Brewer