24 replies to this topic

[HVB]

Yes,  I have all of those on a 1.5" tri-clamp cover.  You should be able to fit your 3 on a 3" with out much problem.  I think your thought with the three tubes should be fine.  If it was me, I would have the one for the airlock/blowoff threaded so you could add a valve to close it up.  But that is not necessary.  Alternatively, you could get a weld-less tri-clamp adapter and put that on the cover and use that for the blowoff.

 

 

Spike does a similar thing but they have a 4" tri-clamp cover

[strangebrewer]

Problem with the brew tech is its a domed lid so other than the 3" TC that's on it it's hard to add anything.  Ideally I want to be able to do pressurized transfers so not sure I want to risk trying to get something to seal on the domed part of the lid.  

 

That chiller from Spike is what got me thinking about this design.  If they made one for a 3" TC I'd probably just buy it but I'm not finding one.  Interesting idea on the airlock hole being threaded.  Going back to the pressurized transfers I was thinking I'd just drill a different cap with the fittings for a ball lock and swap that on when transferring but if the 3rd hole was threaded I could figure out something for doing it all from a single cap.  

[HVB]

I got you on the domed lid and leaks.  Other option would be to SS on a tri-clamp.

 

As for the threaded fitting.  I would go with something like this and this   because I am lazy.  Silver solder the plain end to the lid and then you can have a blow off with a corny disconnect or can push with gas.

 

[strangebrewer]

I'm all in for lazy.  So I'd need to SS on something like this to the cap so I've got a threaded end to work with.  

 

BTW that brew hardware site is dangerous!  Lots of fun things on there to build with.  

[HVB]

I'm all in for lazy.  So I'd need to SS on something like this to the cap so I've got a threaded end to work with.  

 

BTW that brew hardware site is dangerous!  Lots of fun things on there to build with.  

If I was to do it, I would find the right bit where the elbow just slips in, I may trim it so the ribs are gone, and then I would set it up so about 1/16" is sticking out from the bottom and then silver solder from the top making sure I have good penetration to the bottom.  That cover is about 1/8" thick and will have plenty of holding ability.  I do not see the need for the other piece.  All mine are done with a tight fight and silver soldered with good Harris solder.  No issues at all.