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Old 09-26-2010, 02:22 PM   #1
BrewAlchemy
 
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Hi, I am trying to find out if there is a recommended flow rate on batch sparging. I know with fly sparging you want around 1 quart per minute. But does the same go for batch sparging? Even though im not flying sparging, if im using a copper manifold and my flow rate is too high, i would assume i could cause some channeling. Maybe if its too fast i wouldn't be able to leach the sugars out as well. Any suggestions?

Also how long do you wait on your second runnings once you have added more water and stirred up the grain bed again?

 
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Old 09-26-2010, 02:28 PM   #2
Bobby_M
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There is no such thing as channeling in a batch sparge. The only caution is to run off the vorlauf a bit slower to gently set the grain bed, then when you start the full runoff, let it rip.
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Old 09-26-2010, 02:32 PM   #3
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Ok, thanks for the quick response.

 
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Old 09-28-2010, 01:45 AM   #4
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But open the valve slowly when you let it rip or you'll get a huge pile of grain in your kettle.

 
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Old 01-17-2011, 12:45 AM   #5
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Quote:
Originally Posted by Bobby_M View Post
There is no such thing as channeling in a batch sparge. The only caution is to run off the vorlauf a bit slower to gently set the grain bed, then when you start the full runoff, let it rip.
How much would be too much grain in your boil? I have been doing dark beers up until last week I did a nice APA. Much lighter in color and can actually see more grain being run off. Probably the same in my darker beers but just couldn't see it. Those seem to taste just fine though.

 
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Old 01-17-2011, 05:50 AM   #6
EricCSU
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Open the valve slowly when vorlaufing. Once clear, it is wide open. I can run off 4 gallons in about 5 minutes. The last gallon, of course, is the slowest.

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Old 01-22-2011, 09:42 PM   #7
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Quote:
Originally Posted by deepcdan99 View Post
How much would be too much grain in your boil? I have been doing dark beers up until last week I did a nice APA. Much lighter in color and can actually see more grain being run off. Probably the same in my darker beers but just couldn't see it. Those seem to taste just fine though.
If you vorlauf even with only a gallon, you should be free of grain chunks in the boil. If batch sparging, make sure you vorlauf your sparge also.
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Old 01-22-2011, 10:55 PM   #8
MNDan
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I wouldn't go too fast or you will leave a bunch of wort saturated in the grains that hasn't had a change to get to the siphon before it runs dry.

 
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Old 01-22-2011, 11:11 PM   #9
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Quote:
Originally Posted by MNDan
I wouldn't go too fast or you will leave a bunch of wort saturated in the grains that hasn't had a change to get to the siphon before it runs dry.
I don't understand the logic in that.
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Old 01-22-2011, 11:23 PM   #10
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Just that if you run it really fast, you will notice that when you scoop out your grains that they are still very damp (& heavy!) and hold a lot of wort that you didn't recover.

 
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