Depth of a coupling preferences?

[oregonparamedic]

So I'm getting ready to have my couplings welded to my kegs and I was looking at a couple of ways to weld them in. One would be about half way in so that the coupling has the weld in the middle (maybe stronger?). The other was to surface weld them so I have a smoother surface on the interior of my kegs for cleaning. Any thoughts?

 

[Henrythe9th]

the father in the couplers go the less you have sticking out, a butt or flush welded full coupling + close nipple+ ball valve + hose nipple ETC, = about 5in.
I put mine in about 1 inch for full coupler flush or 1/4 in with a half coupler

I also have the couplers turned down on a lathe to even fractional size for perfect fit into a 1in hole
like so

had to use a very large coupling for the existing hole 1 1/4in

 

[tigmaster]

i would flush mount it eas y for cleaning...ive modified over 50 kegs and all are flush mount

 

[oregonparamedic]

Thanks for the help. I like the idea of flush mounting but the amount sticking out is also a concern. I'm going to have to look at other setups and see what might work the best for me.

 

[dmfa200]

I'm not sure if this is a given for everyone, but if you want to flush mount a coupling, and make the weld look nice with consistent fusion you should radius the end of the coupling to match the profile of the keg for best results.

 

[Catt22]

I prefer the flush mount option as I can see no advantage in having it protrude on the inside. The extra length on the outside can actually be an advantage in that it moves the valve and hose farther away from the heat source. I also like to use a full coupling for the drain valve so that the threads can be used on the inside for a dip tube.

 

[Pilgarlic]

When coupling, depth is more of an issue for her than it is for me.