Spike Brewing 12.5 Conical Fermenter Giveaway - Enter Now!

Home Brew Forums > Home Brewing Beer > Equipment/Sanitation > welding a locknut onto a kettle

Reply
 
LinkBack Thread Tools
Old 06-05-2009, 05:01 AM   #1
paledragon
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2008
Location: Bridgewater, MA
Posts: 156
Default welding a locknut onto a kettle

so i bought an NPT coupling off mcmaster and planned to have it welded onto my kettle. however, whether or not the elements screw in enough seems to be hit or miss. i just got some of the stainless locknuts from bargain fittings, and all the elements i have screw in nicely. is there any downside to having one of the locknuts welded on instead of the coupling?

thanks,
p.d.

__________________

keg 1: 3 hearted ale
keg 2: british strong ale
keg 3: munich helles
keg 4: empty

on deck: more IPA.

paledragon is offline
 
Reply With Quote Quick reply to this message
Old 06-05-2009, 12:09 PM   #2
Poobah58
HBT_LIFETIMESUPPORTER.png
Feedback Score: 1 reviews
 
Poobah58's Avatar
Recipes 
 
Join Date: Jun 2007
Location: New Milford, CT
Posts: 2,204
Liked 52 Times on 46 Posts
Likes Given: 24

Default

If you are going to weld, weld on a coupling!

__________________
Mead Lane Brewing
The liver is evil and must be punished
Poobah58 is offline
 
Reply With Quote Quick reply to this message
Old 06-05-2009, 12:25 PM   #3
drez77
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2007
Location: Palmer MA
Posts: 365
Liked 3 Times on 2 Posts

Default

I have what looks like the same nut as listed on Barging Fittings and plan to weld it to the outside of the keg. Right now I am using it weldless to hold my element on. I plan to have the gasket groove facing the element. I do not see why it will not work. I originally wanted to use a coupling but that will require me to make some other changes to my setup.

__________________
drez77 is offline
 
Reply With Quote Quick reply to this message
Old 06-05-2009, 01:21 PM   #4
paledragon
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2008
Location: Bridgewater, MA
Posts: 156
Default

Quote:
Originally Posted by Poobah58 View Post
If you are going to weld, weld on a coupling!
the problem is the NPT coupling and the straight threaded heater elements. sometimes they play well together, sometimes not. the locknut is almost the size of a half-coupling on it's own.

have you had luck screwing elements into the couplings?
__________________

keg 1: 3 hearted ale
keg 2: british strong ale
keg 3: munich helles
keg 4: empty

on deck: more IPA.

paledragon is offline
 
Reply With Quote Quick reply to this message
Old 06-05-2009, 01:27 PM   #5
Jaybird
Vendor
HBT_SPONSOR.png
HomeBrewTalk 2012 Vendor Giveaway Participate
Feedback Score: 1 reviews
 
Jaybird's Avatar
Recipes 
 
Join Date: Jul 2006
Location: Nor*Cal
Posts: 5,488
Liked 275 Times on 198 Posts
Likes Given: 94

Default

Both of my elements on my HLT are screwed into a 1/2 coupler that I welded into place. They don't really feel like they work well together, but they do. Also I have since burned up one of my elements and had to remove and reinstall one, and it worked out just fine. I would go w/ the coupling myself.

__________________
Need a False Bottom for your Keg, Kettle or Cooler?

I have been making custom False Bottoms for just about everything since 2008

Nor Cal Brewing Solutions, Reddings local homebrew store
(530)243-BEER and (530)221-WINE


Still have questions PM me here or hit the website.

http://www.norcalbrewingsolutions.com and like us on Facebook https://www.facebook.com/NorCalBrewingSolutionsfor Facebook only promos too
Jaybird is offline
 
Reply With Quote Quick reply to this message
Old 06-05-2009, 01:50 PM   #6
Poobah58
HBT_LIFETIMESUPPORTER.png
Feedback Score: 1 reviews
 
Poobah58's Avatar
Recipes 
 
Join Date: Jun 2007
Location: New Milford, CT
Posts: 2,204
Liked 52 Times on 46 Posts
Likes Given: 24

Default

I have 2 pots with 1" couplings and have no problems getting the elements in and out. Is there enough thread on a locknut to prevent leaking?

__________________
Mead Lane Brewing
The liver is evil and must be punished
Poobah58 is offline
 
Reply With Quote Quick reply to this message
Old 06-05-2009, 02:18 PM   #7
Bobby_M
Vendor and Brewer
HBT_SPONSOR.png
Vendor Ads 
Feedback Score: 2 reviews
 
Bobby_M's Avatar
Recipes 
 
Join Date: Aug 2006
Location: Whitehouse Station, NJ
Posts: 21,904
Liked 940 Times on 626 Posts
Likes Given: 28

Default

I assume you have to be liberal with the thread sealant or teflon tape. NPT and NPS sorta sometimes mesh, but I doubt it would be leak free with no sealant.

If I were doing it, I'd be silver soldering the locknut to the kettle.

__________________
BrewHardware.com
Sightglass, Refractometer, Ball Valve, Weldless bulkhead, Thermometer, Decals, Stainless Steel Fittings, Compression Fittings, Camlock Quick Disconnects, Scale, RIMS tube, Plate Chiller, Chugger Pump, Super Clear Silicone Tubing, and more!

New Stuff?
Bobby_M is offline
 
Reply With Quote Quick reply to this message
Old 06-05-2009, 02:20 PM   #8
Yuri_Rage
Gritty.
HBT_MODERATOR.png
Feedback Score: 0 reviews
 
Yuri_Rage's Avatar
Recipes 
 
Join Date: Jul 2006
Location: Southwest
Posts: 13,909
Liked 605 Times on 375 Posts
Likes Given: 54

Default

Bobby, the threads don't make the seal. There's a gasket that does.

__________________
Homebrewed Blog..........YouTube Channel .......... Shirts, posters, etc
Yuri_Rage is offline
 
Reply With Quote Quick reply to this message
Old 06-05-2009, 02:29 PM   #9
drez77
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2007
Location: Palmer MA
Posts: 365
Liked 3 Times on 2 Posts

Default

Quote:
Originally Posted by Poobah58 View Post
I have 2 pots with 1" couplings and have no problems getting the elements in and out. Is there enough thread on a locknut to prevent leaking?

The nut has a groove on it for a o-ring. I think it will work. Time will tell ..LOL
__________________
drez77 is offline
 
Reply With Quote Quick reply to this message
Old 06-05-2009, 03:21 PM   #10
Bobby_M
Vendor and Brewer
HBT_SPONSOR.png
Vendor Ads 
Feedback Score: 2 reviews
 
Bobby_M's Avatar
Recipes 
 
Join Date: Aug 2006
Location: Whitehouse Station, NJ
Posts: 21,904
Liked 940 Times on 626 Posts
Likes Given: 28

Default

Quote:
Originally Posted by Yuri_Rage View Post
Bobby, the threads don't make the seal. There's a gasket that does.
You actually get enough turns to the point where the gasket makes contact? That's surprising to me though I've never threaded 1" NPS into NPT either. At 1/2", you get maybe 1 full turn before it binds.
__________________
BrewHardware.com
Sightglass, Refractometer, Ball Valve, Weldless bulkhead, Thermometer, Decals, Stainless Steel Fittings, Compression Fittings, Camlock Quick Disconnects, Scale, RIMS tube, Plate Chiller, Chugger Pump, Super Clear Silicone Tubing, and more!

New Stuff?
Bobby_M is offline
 
Reply With Quote Quick reply to this message
Reply


Quick Reply
Message:
Options
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Welding Help SugarJohnson DIY Projects 6 09-30-2009 07:50 PM
Kettle Coupling Welding JVD_X DIY Projects 2 09-28-2009 04:30 PM
Welding rightwingnut Equipment/Sanitation 8 08-01-2009 09:35 PM
Welding CO2 blowmax10 Bottling/Kegging 19 06-08-2009 03:05 PM
Machined Keggle conv locknut here bkwudz Equipment/Sanitation 3 04-19-2008 10:17 AM