Sterile Welding Ball Valve - Home Brew Forums
Register Now For Free!

Home Brew Forums > Home Brewing Beer > DIY Projects > Kettles, Mash Tuns & Hot Liquor Tanks > Sterile Welding Ball Valve

Thread Tools
Old 08-18-2012, 06:03 PM   #1
Aug 2012
Fayetteville, Arkansas, United States
Posts: 1

I'm sure this has been asked before, but I can't seem to find an answer to my specific question. Here goes:

I bought a stainless steel 10.5 gallon brew kettle and want to add a stainless 1/2" ball valve. I've heard mixed reviews of the weldless add-on valves and my neighbor (a plumber and steelworker) has offered to weld one onto my kettle for me instead. However, I've read that you need to be careful to have a sterile weld. Does "sterile" refer to eliminating any places for microbes to hide near the weld site (i.e., a smooth weld) or does "sterile" mean something else?

Thanks in advance for the help!

A Newbie

Reply With Quote
Old 08-18-2012, 06:12 PM   #2
Oct 2010
Atlanta, Georgia
Posts: 554
Liked 30 Times on 17 Posts

Its sanitary welding, where you use a back purge and a few different techniques. Your boil kettle does not need to be welded this way.

If you are modifying a fermenter or anything that touches your beer after it is cooled then it is recommended to use sanitary welding techniques.
Denny Conn - “The best beer possible with the least effort possible while having the most fun possible!”

Me - "Gun Control Means Using Both Hands."

Reply With Quote
Old 08-18-2012, 07:04 PM   #3
Apr 2012
Discovery Bay, Ca
Posts: 103
Liked 14 Times on 9 Posts

When you get your fittings welded on just purge the rear of the weld, or you can do what I do instead of wasting argon to fill the kettle and welding it out of position. I use solar flux B on the back side of the weld after I put a small tack to hold it in place. I welded the first one without. It would be nice to be able to make a copper ring on the backside of the weld, that would make life soo much easier and you wouldn't have the carbide precipitation from no purge.

Reply With Quote
Thread Tools

Similar Threads
Thread Thread Starter Forum Replies Last Post
Welding ball valve coupler on Keggle cjham9985 Kettles, Mash Tuns & Hot Liquor Tanks 6 04-28-2011 07:27 PM
Leaky ball valve Arneba28 Kettles, Mash Tuns & Hot Liquor Tanks 2 03-18-2011 03:55 AM
Opinions On Ball Valve, Gate Valve, Or Globe Valve For March Pumps jcav Brew Stands 13 10-16-2010 03:56 AM
ball valve on aluminum HLT and BK? SkyWalker Kettles, Mash Tuns & Hot Liquor Tanks 10 05-17-2010 12:50 AM

Forum Jump