Solution for installing compression fitting to keg? - Home Brew Forums
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Old 07-28-2010, 10:57 PM   #1
Ranger9913
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I purchased two compression fittings 3/8"x1/2 NPT to install a new SS HERMS coil. I thought I could install these just using an 1/2 nut but it appears I need a washer for the inside of keg.

Does anyone has a preferred method for installing these fittings to a keg?



 
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Old 07-29-2010, 12:48 AM   #2
BargainFittings
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What are you going to attach to the outside to the 1/2 NPT side?

If you had the o-rings you could possibly thread the locknut on with the groove facing toward the keg wall and then put the o-ring on and put it through the hole.

Attach your coupler, 90 or valve to the outside and it should seal if you use lots of teflon tape.

Your plan to attach it straight through the wall and then use a locknut will not leave much thread to attach anything.



 
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Old 07-29-2010, 03:00 AM   #3
TriangleIL
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I believe JCDillin is doing something similiar. Check this post.
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Old 07-29-2010, 03:19 AM   #4
Ranger9913
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It seems I will need a washer on the inside of the keg and I will have to use a couple on the outside as simply using a locknut will not leave room for my quick-disconnect fitting.

 
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Old 07-29-2010, 11:20 AM   #5
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I was playing with attaching one through the wall of my test keg and it worked like I described but only left about 2 threads to screw down on due to the o-ring.

You might need to use a flat gasket with the washer to get a seal.

 
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Old 07-29-2010, 12:33 PM   #6
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I soldered male hex 1/2" npt to my kettles.

 
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Old 07-29-2010, 12:45 PM   #7
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Yes I was thinking about that but unfortunately I drilled a 7/8" hole by mistake and it's probably too loose to solder now.

 
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Old 07-29-2010, 12:54 PM   #8
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How about soldering the 1/2" NPT locknut on the keg? If you have the flux and solder on hand it would be fairly simple to do.

 
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Old 07-29-2010, 01:07 PM   #9
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Quote:
Originally Posted by BargainFittings View Post
How about soldering the 1/2" NPT locknut on the keg? If you have the flux and solder on hand it would be fairly simple to do.
Using teflon tape will the fitting thread water tight?

 
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Old 07-29-2010, 01:43 PM   #10
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Is your QD fitting male or female?

If it were mine, I'd silver solder a tight fitting washer to the compression fitting, then a silicone washer/oring, keg wall, then your QD fitting. If it doesn't tighten, shim with another washer or two on the outside.


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