I may have drilled the keggle hole too big - Home Brew Forums
Register Now For Free!

Home Brew Forums > Home Brewing Beer > DIY Projects > Kettles, Mash Tuns & Hot Liquor Tanks > I may have drilled the keggle hole too big

Reply
 
Thread Tools
Old 01-28-2009, 04:18 PM   #1
mramann
Recipes 
 
Nov 2008
Posts: 38
Liked 1 Times on 1 Posts



Hey kids,

Building a new weldless keggle, and looks like I may have gone just a bit too big with the unibit (step drill). I only went to the recommended 7/8" but I probably should have stopped at 3/4".

When filled with hot water, the build doesn't leak too badly, but there's definitely a drip on the outside. I've sealed it up with plumber's tape, and that doesn't work really well. When the valve is opened the leak gets much worse.

I'm afraid that I'll have to get it welded now. Anyone have any thoughts?

Here are the parts, from the inside to the outside:

Bazooka screen
1/2" coupler
1/2" by 1" closed nipple
Lockdown nut
High-temp O ring
Keg wall
High-temp O ring
Lockdown nut
1/2" ball valve

Many thanks.

 
Reply With Quote
Old 01-28-2009, 04:25 PM   #2
HenryHill
HBT_LIFETIMESUPPORTER.png
 
HenryHill's Avatar
Recipes 
 
Mar 2007
Perry, MI
Posts: 3,040
Liked 11 Times on 11 Posts


Can't you just use a larger diameter o-ring? Opening valve may move the assembly over to uncover the hole more.
__________________
Quote:
Originally Posted by orfy
Never mock another man's brewery.
Quote:
Originally Posted by IrregularPulse View Post
This is HBT of course. Normal Thread that goes every direction but the one intended. This forum should be scientific proof the beer causes ADD

 
Reply With Quote
Old 01-28-2009, 04:30 PM   #3
mramann
Recipes 
 
Nov 2008
Posts: 38
Liked 1 Times on 1 Posts


Quote:
Originally Posted by Henry Hill View Post
Can't you just use a larger diameter o-ring? Opening valve may move the assembly over to uncover the hole more.
Thanks, Henry.

The o-rings that are installed have provided excellent seals with that sized nipple before. Are you referring to a thicker o-ring? That might make sense. But the diameter should be based off the diameter of the nipple itself.

I'm sure that opening the valve moves the assembly, which could exacerbate the leak a little. Also, the downward pressure of the water moving out of the valve probably pulls water from the leak more quickly.

Maybe a nice, fat o-ring will work. I'll definitely try that. Any other ideas?

 
Reply With Quote
Old 01-28-2009, 04:49 PM   #4
evanmars
EAC Wannabe
HBT_LIFETIMESUPPORTER.png
 
evanmars's Avatar
Recipes 
 
Dec 2006
Springport, Michigan
Posts: 922
Liked 58 Times on 38 Posts


I used flat silicone washers from McMaster-Carr. 99604A131
__________________
Consistency is only a virtue if you're not a screwup

Primary - Duck Lake EPA
Duck Pee (Cream of Three Crops variant)

Secondary - 0
Kegged - 0 No kegs anymore :(
Bottled - 0

 
Reply With Quote
Old 01-28-2009, 05:04 PM   #5
The Pol
Recipes 
 
Feb 2007
Posts: 11,454
Liked 97 Times on 82 Posts


Mine ws drilled to 7/8"... and has not dripped in about 3 years.

It could be overtightened, or not tight enough. I have always enjoyed my weldless fittings.

 
Reply With Quote
Old 01-28-2009, 05:11 PM   #6
mramann
Recipes 
 
Nov 2008
Posts: 38
Liked 1 Times on 1 Posts


Quote:
Originally Posted by evanmars View Post
I used flat silicone washers from McMaster-Carr. 99604A131
This is a great part. I went with a smaller inner diameter than you had suggested (3/4"). Thanks for the heads up about these.

I'd always done fine with the o-rings. Not sure why this one is leaking. I had to buy a pack of 10 from McMaster, so these are probably going into all my tuns and kettles. Thanks so much.

 
Reply With Quote
Old 01-28-2009, 05:15 PM   #7
sigmund
Recipes 
 
Jan 2008
Posts: 417
Liked 4 Times on 4 Posts


Quote:
Originally Posted by mramann View Post
This is a great part. I went with a smaller inner diameter than you had suggested (3/4"). Thanks for the heads up about these.

I'd always done fine with the o-rings. Not sure why this one is leaking. I had to buy a pack of 10 from McMaster, so these are probably going into all my tuns and kettles. Thanks so much.
Let us know how this works out.
__________________
Quote:
BTW, those can not be drunk in multiple count if the day’s plan includes finish carpentry work or power tools.
- Schoonie

Burkey Street Brewery

 
Reply With Quote
Old 01-28-2009, 05:33 PM   #8
silvervan83
Recipes 
 
Dec 2008
Lakewood, WA
Posts: 237

My buddy has weldless fittings and he used baby bottle nipples to seal it up. He told me he just used a utility knife to cut the circle out and slipped them on. Worked great.... and cheap and easy to find. They also withstand heat pretty well.

 
Reply With Quote
Old 01-28-2009, 05:35 PM   #9
Bobby_M
Vendor and Brewer
HBT_SPONSOR.png
 
Bobby_M's Avatar
Recipes 
 
Aug 2006
Whitehouse Station, NJ
Posts: 23,339
Liked 1767 Times on 1124 Posts


The biggest problem with these assemblies is sealing between the Oring and the nipple threads.

The solution I think everyone must be using is packing the thread valleys with Teflon tape.

If you could just get the Oring to sit on the flat unthreaded part of the nipple, you'd only need the inner Oring and no teflon tape at all but I realize close nipples have no unthreaded portion.
__________________
Welcome to BrewHardware.com. I love you.
New Stirplates are IN!
Chugger Pumps, Pump Kits, Camlocks, Sightglasses, Clear USA made Silicone Tubing, RIMS, Electric Install Parts, etc.

 
Reply With Quote
Old 01-30-2009, 09:16 PM   #10
kal
HBT_SUPPORTER.png
 
kal's Avatar
Recipes 
 
Nov 2006
Ottawa, Canada
Posts: 2,548
Liked 364 Times on 234 Posts


Quote:
Originally Posted by evanmars View Post
I used flat silicone washers from McMaster-Carr. 99604A131
These are 0.99" ID and 2" OD. Why so large ID?

1/2" MPT fittings are only 3/4" so I would have thought that a 0.75" ID would work better no?

Kal

 
Reply With Quote
Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Sanke Keg - hole drilled slightly too big, need advice bmickey Kettles, Mash Tuns & Hot Liquor Tanks 4 09-01-2009 04:02 PM
Keggle - How high to drill the hole for the valve? atkinsr Equipment/Sanitation 4 02-24-2009 11:09 PM
Hole Saw Set...OK for keggle drill? broadbill Equipment/Sanitation 32 11-22-2008 01:38 AM
Drilled my keggle... Funkenjaeger Kettles, Mash Tuns & Hot Liquor Tanks 19 05-14-2008 06:35 PM
tricks on drilling 7/8ths hole for keggle? Ol' Grog Equipment/Sanitation 16 04-06-2007 08:56 PM


Forum Jump