Electric Brewing Supply 30A BCS Giveaway!


Home Brew Forums > Home Brewing Beer > DIY Projects > metals and coatings for mash tuns?
Reply
 
LinkBack Thread Tools
Old 02-07-2009, 09:10 PM   #1
okstatepike
Feedback Score: 0 reviews
Recipes 
 
Join Date: Aug 2008
Location: Austin, TX
Posts: 45
Default metals and coatings for mash tuns?

I am working on a cooler-based mash tun and I am having trouble finding a certain part, and it leads me to a question.

I have been looking for a stainless steel 3/4" washer for the internal side of the bulkhead. All I have been able to find is a zinc coated washer. Is the zinc coating a problem? Any negative interaction chemically with the mash? If so, where can I find a washer like this that is stainless steel?

__________________
Red Dirt Brewing Co.
Planning: None
Secondary: None
Kegged: None
Drinking: Everything
okstatepike is offline
 
Reply With Quote Quick reply to this message
Old 02-07-2009, 09:16 PM   #2
eriktlupus
Feedback Score: 0 reviews
 
eriktlupus's Avatar
Recipes 
 
Join Date: Jan 2007
Location: Cereal City, USA
Posts: 2,647
Liked 9 Times on 7 Posts

Default

zinc is a electrically active metal, they use it on boats to prevent corrosion on motor parts, so i wouldn't think that in your acidic wort would be a good place. i found my SS washer at the local farm supply store .(tsc)

__________________

primary1 :UTOPIA BABY(still searching for it)
secondary:middling bastard ipa
kegged:simcoe blonde, crystal pale ale, yellow jacket golden ale, lemon shandy blonde
DRINKIN DAWG BREWERY
LET'S GO RED WINGS


join michigan mashers here

extraction calculator
grains in pounds(G) X 36(average points per gallon of grains) / batch size in gallons(g) = maximum efficiency(ME)
OG / ME = brewhouse efficiency

eriktlupus is offline
 
Reply With Quote Quick reply to this message
Old 02-07-2009, 09:49 PM   #3
Duckfoot
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jul 2008
Location: Dürty Soüth, GA
Posts: 1,375
Liked 5 Times on 5 Posts

Default

IIRC I found a SS 3/4" washer at Lowes... I still can't believe it myself...

__________________

On deck : DFB Triple Black Death By Chocolate Stout
Primary: Notta...
Secondary: 21 Year Mead...
Kegged : DFB Belgian Pale, DFB Brown, DFB Belgian Dark Strong, DFB Cider...
------------------------------------------------------

Quote:
Originally Posted by Timberwolf View Post
Non-Alcoholic beer is like going down on your cousin, it might taste the same but it just ain’t right!
Duckfoot is offline
 
Reply With Quote Quick reply to this message
Old 02-07-2009, 10:00 PM   #4
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: 22,105
Liked 1016 Times on 678 Posts
Likes Given: 28

Default

Yup, 3/4" stainless washers are in the specialty drawers at Lowes. The closest lowes is always out of stock on them, but a newer one a little further away has them all the time.

__________________
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 02-07-2009, 10:52 PM   #5
BrewBeemer
HBT_SUPPORTER.png
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2006
Location: island, inside an atoll
Posts: 3,507
Liked 20 Times on 20 Posts
Likes Given: 7

Default

Any marine supply or Chandlery will have stainless hareware and washers by the box full.
For inside a round MLT pre bend the washer to match the radius first before installing unless it's a square MLT with flat mounting surfaces. Many 3/4" washers are rather oversize in the ID, this is where a 5/8" almost fits then a quick bore on the lathe for a nice fit is required.

__________________

Bier Jagdwaffe... Bier 30 zeit.....~~=o&o>..........


BrewBeemer is offline
 
Reply With Quote Quick reply to this message
Old 02-07-2009, 11:05 PM   #6
BrewBeemer
HBT_SUPPORTER.png
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2006
Location: island, inside an atoll
Posts: 3,507
Liked 20 Times on 20 Posts
Likes Given: 7

Default

The ACE hardeware store in my small town has stainless not only in washers but SAE, Metric including left hand thread nuts, bolts and screws. True-Value has 1/10 of ACE, don't care plus higher priced.

__________________

Bier Jagdwaffe... Bier 30 zeit.....~~=o&o>..........


BrewBeemer is offline
 
Reply With Quote Quick reply to this message
Old 02-08-2009, 01:47 PM   #7
ghack
HBT_SUPPORTER.png
Feedback Score: 0 reviews
 
ghack's Avatar
Recipes 
 
Join Date: Dec 2008
Location: New Orleans
Posts: 266
Liked 8 Times on 8 Posts

Default

If you mix zinc (galvanized) metals with copper in a mildly acidic liquid you will be creating a battery. Both metals will corrode quickly.

__________________
ghack is offline
 
Reply With Quote Quick reply to this message
Old 02-08-2009, 01:51 PM   #8
donshizzles
Feedback Score: 0 reviews
Recipes 
 
Join Date: Nov 2008
Location: Orinda, CA
Posts: 199
Liked 2 Times on 2 Posts
Likes Given: 9

Default

Got mine at Fastenal

__________________
donshizzles is offline
 
Reply With Quote Quick reply to this message
Old 12-31-2013, 09:01 PM   #9
signpost
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2012
Location: Berkley, Michigan
Posts: 893
Liked 75 Times on 66 Posts
Likes Given: 449

Default

OK, I've been looking through tons of old threads on this topic.

I had picked up some zinc washers for my new cooler/mash tun build at Home Depot. Realized that was a bad idea. Then I found some washers at the local ACO hardware store that were just labeled "steel SAE". I picked up a few, but now I'm wondering if they are actually what I need. Of course, there was nobody around the store that seemed like they would have a clue enough to give an answer that I'd be willing to trust.

So, what do you all think? Is a "steel SAE" washer for $.50 OK, or do I need to go to Lowes to get the stainless steel ones that are $2.50 for 2 of them.

__________________
On deck - a few single hopped pale ales - Cascade, Calypso, and Legacy
Primary/Secondary - Chris' Tall Ale (a Belgian golden ale that now has Brett added); Northern Brewer's Oud Bruin de Table / nada
Bottled - The Land of Pils and Honey, an imperial Saison with Clover Honey; a sour mashed Berliner Weisse; Cascade Pale Ale; Hop Wine - an Imperial India Pilsner Ale; Guajillo Ancho Brown Ale; Back To School Porter, an Imperial Robust Porter with vanilla beans added
signpost is offline
 
Reply With Quote Quick reply to this message
Old 01-01-2014, 01:16 AM   #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: 22,105
Liked 1016 Times on 678 Posts
Likes Given: 28

Default

SAE definitely doesn't mean stainless, it's more about the dimensions. You need stainless.

__________________
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
Circular vs Rectangular Mash Tuns PavlovsCat All Grain & Partial Mash Brewing 2 03-02-2009 07:32 PM
Some questions about Mash Tuns chefchris Equipment/Sanitation 9 09-08-2008 04:55 PM
What do you think of buying pre-made mash tuns? Jayfro21 All Grain & Partial Mash Brewing 17 11-14-2007 08:02 PM
Suggestions for Mash Tuns Jsta Porter All Grain & Partial Mash Brewing 10 10-24-2007 07:32 AM
Rectangular vs. Round Mash Tuns Axegod All Grain & Partial Mash Brewing 27 06-28-2006 03:21 AM