Author Topic: Tightening keg posts  (Read 2597 times)

Online Jimmy K

  • Official Poobah of No Life.
  • *
  • Posts: 3500
  • Delaware
    • View Profile
Tightening keg posts
« on: February 27, 2012, 12:36:49 PM »
After buying used kegs and taking the posts off for cleaning and o-ring replacement, I'm wondering - when I put the posts back, how tight should I tighten them.
 
Purely academic at this point, since I basically wrenched them down until they cried out for mercy, then kept tightening until the crying stopped.
Delmarva United Homebrewers - President by inverse coup - former president ousted himself.
AHA Member since 2006
BJCP Certified: B0958

Offline bluesman

  • Global Moderator
  • I must live here
  • *****
  • Posts: 8808
  • Delaware
    • View Profile
Re: Tightening keg posts
« Reply #1 on: February 27, 2012, 12:40:10 PM »
Jim...you only need to tighten them to the point they make contact with the mating surface. They are designed to just make contact and the rubber o-ring does the actual sealing. You don't need to torque them down.

edit: they do need to be tight so that they don't work themselves loose upon connecting and disconnecting...so just enough torque to hold them in place.
« Last Edit: February 27, 2012, 12:42:16 PM by bluesman »
Ron Price

Offline Slowbrew

  • Senior Brewmaster
  • ******
  • Posts: 1929
  • The Slowly Losing IT Brewery in Urbandale, IA
    • View Profile
Re: Tightening keg posts
« Reply #2 on: February 27, 2012, 01:35:41 PM »
I have always spun them down till they were finger tight and d pulled them tight with my socket and ratchet.  Tight is defined as "till the post stops turning without me working too hard".  There's no need to torque them.

Paul
Where the heck are we going?  And what's with this hand basket?

Offline tubercle

  • Senior Brewmaster
  • ******
  • Posts: 1639
  • Sweet Caroline
    • View Profile
Re: Tightening keg posts
« Reply #3 on: February 27, 2012, 05:12:23 PM »
Finger tight plus 1/2 turn is plenty. Check for leaks w/starsan.
Sweet Caroline where the Sun rises over the deep blue sea and sets somewhere beyond Tennessee

Offline euge

  • I must live here
  • **********
  • Posts: 7396
  • Estilo Casero
    • View Profile
Re: Tightening keg posts
« Reply #4 on: February 27, 2012, 10:19:19 PM »
When you said Purely academic at this point, since I basically wrenched them down until they cried out for mercy, then kept tightening until the crying stopped. I cringed.
The first principle is that you must not fool yourself, and you are the easiest person to fool. -Richard P. Feynman

Offline oscarvan

  • Senior Brewmaster
  • ******
  • Posts: 1707
    • View Profile
Re: Tightening keg posts
« Reply #5 on: February 28, 2012, 01:11:47 AM »
From memory feel......20 ft pounds sound OK?
Wooden Shoe Brew Works (not a commercial operation) Bethlehem, PA
http://www.woodenshoemusic.com/WSBW/WSBW_All_grain_Setup.html
I brew WITH style..... not necessarily TO style.....

Offline bluesman

  • Global Moderator
  • I must live here
  • *****
  • Posts: 8808
  • Delaware
    • View Profile
Re: Tightening keg posts
« Reply #6 on: February 28, 2012, 07:21:18 AM »
From memory feel......20 ft pounds sound OK?

Sounds about right. Just enough to keep the post from becoming loose upon normal use.
Ron Price

Offline richardt

  • Senior Brewmaster
  • ******
  • Posts: 1227
    • View Profile
Re: Tightening keg posts
« Reply #7 on: February 28, 2012, 07:27:57 AM »
Finger tight plus 1/2 turn is plenty. Check for leaks w/starsan.
This.  Check your lid, posts, poppets, and pressure relief valve everytime you seal up a keg.
Usually it is the lid, but every now and then a PRV, poppet, or post will leak when you pressurize w/ CO2. 
Best to detect it early before you lose a whole tank of CO2.

Online Jimmy K

  • Official Poobah of No Life.
  • *
  • Posts: 3500
  • Delaware
    • View Profile
Re: Tightening keg posts
« Reply #8 on: February 28, 2012, 08:28:11 AM »
They were used and still had soda in them. I had to sit on the keg and put my weight on the wrench to get the posts off, so I thought they needed to be that tight. Later it occurred to me that I was probably just mangling the o-rings doing that. Thanks.
Delmarva United Homebrewers - President by inverse coup - former president ousted himself.
AHA Member since 2006
BJCP Certified: B0958

Offline bluesman

  • Global Moderator
  • I must live here
  • *****
  • Posts: 8808
  • Delaware
    • View Profile
Re: Tightening keg posts
« Reply #9 on: February 28, 2012, 10:52:13 AM »
They were used and still had soda in them. I had to sit on the keg and put my weight on the wrench to get the posts off, so I thought they needed to be that tight. Later it occurred to me that I was probably just mangling the o-rings doing that. Thanks.

I've had this happen to me before. If it requires excessive force to remove them, then they're way too tight.
Ron Price

Offline beersk

  • Brewmaster General
  • *******
  • Posts: 2148
  • In the night!
    • View Profile
Re: Tightening keg posts
« Reply #10 on: February 28, 2012, 01:47:02 PM »
Can't remember where I saw it (it was on youtube somewhere) but the guy said turn the post finger tight then tighten with a wrench a little and give the wrench one "whack".  That's what I do. 
Watch out for those Cross Dressing Amateurs!

Jesse

Offline oscarvan

  • Senior Brewmaster
  • ******
  • Posts: 1707
    • View Profile
Re: Tightening keg posts
« Reply #11 on: February 29, 2012, 07:11:17 PM »
Can't remember where I saw it (it was on youtube somewhere) but the guy said turn the post finger tight then tighten with a wrench a little and give the wrench one "whack".  That's what I do.

Would that be a metric or a standard whack?
Wooden Shoe Brew Works (not a commercial operation) Bethlehem, PA
http://www.woodenshoemusic.com/WSBW/WSBW_All_grain_Setup.html
I brew WITH style..... not necessarily TO style.....

Offline bo

  • Senior Brewmaster
  • ******
  • Posts: 1141
    • View Profile
Re: Tightening keg posts
« Reply #12 on: February 29, 2012, 08:30:56 PM »
The o-ring seals it. Wacking it is just asking for stripped threads or difficulty taking it off in the future.
« Last Edit: March 01, 2012, 05:54:59 AM by bo »

Offline euge

  • I must live here
  • **********
  • Posts: 7396
  • Estilo Casero
    • View Profile
Re: Tightening keg posts
« Reply #13 on: February 29, 2012, 10:30:39 PM »
All 16 of my kegs' posts stop when tightening. No need for pushing matters. Relax, getting the posts off initially was tough but no need to force anything.
The first principle is that you must not fool yourself, and you are the easiest person to fool. -Richard P. Feynman

Offline beersk

  • Brewmaster General
  • *******
  • Posts: 2148
  • In the night!
    • View Profile
Re: Tightening keg posts
« Reply #14 on: March 01, 2012, 08:10:32 AM »
The o-ring seals it. Wacking it is just asking for stripped threads or difficulty taking it off in the future.
It's not a very hard whack.  It's more of a smack, really...
You know when you..........wait, nevermind. :-X
« Last Edit: March 01, 2012, 08:12:28 AM by beersk »
Watch out for those Cross Dressing Amateurs!

Jesse