Why not put the false bottom above the valve? - Home Brew Forums

Register Now!
Home Brew Forums > Home Brewing Beer > Equipment/Sanitation > Why not put the false bottom above the valve?

Reply
 
Thread Tools
Old 04-04-2011, 04:18 PM   #1
Cold Country Brewery
Recipes 
 
Jan 2011
Superior, WI
Posts: 233
Liked 1 Times on 1 Posts



Why do most false bottoms have the dip tube going in the middle of it? Why can't you just take a false bottom and put some kind of riser (2" or so) on the bottom of it to raise it over the valve? Then you wouldn't have to worry about disconnecting the dip tube to get it out.

Am I missing something obvious?

 
Reply With Quote
Old 04-04-2011, 04:28 PM   #2
BendBrewer
Recipes 
 
Jan 2010
Bend, Oregon
Posts: 3,134
Liked 77 Times on 59 Posts


It would require a very snug fit. I think some kettles are built like that but a one size fit all FB application such as that wouldn't work.

After fabricating one to fit perfect, the question would be "Why not just use a dip tube?"
__________________
CarPort Brewery
JCMAC Farms Garden

 
Reply With Quote
Old 04-04-2011, 04:32 PM   #3
Bobby_M
Vendor and Brewer
HBT_SPONSOR.png
 
Bobby_M's Avatar
Recipes 
 
Aug 2006
Whitehouse Station, NJ
Posts: 23,200
Liked 1657 Times on 1071 Posts


You'd have a lot of space below where you'd have liquid mash. It's not exactly dead space but I'd call it slack space. This volume of liquid would be in addition to your desired strike water to grain ratio. It takes away from your sparge volume. In fly sparging, it wouldn't be all that detrimental though.
__________________
Welcome to BrewHardware.com. I love you.
BIAB Large Mesh False Bottoms and SS HERMS COILS are IN!!
Chugger Pumps, Pump Kits, Camlocks, Sightglasses, Clear USA made Silicone Tubing, RIMS, Electric Install Parts, etc.

 
Reply With Quote
Old 04-04-2011, 04:35 PM   #4
BendBrewer
Recipes 
 
Jan 2010
Bend, Oregon
Posts: 3,134
Liked 77 Times on 59 Posts


I was thinking Kettle as that is where I use a FB. Yeah, what Bobby said if in the MLT. You want your liquid to be with your grains.
__________________
CarPort Brewery
JCMAC Farms Garden

 
Reply With Quote
Old 04-04-2011, 04:39 PM   #5
Mike_A
Recipes 
 
Jan 2011
Hanover Park, IL
Posts: 231
Liked 1 Times on 1 Posts


In my case, I keep the false bottom below the port and use a dip tube because of how large the pots are. 1 gal in my pots is about 0.75" deep. My port is 2" off the bottom, which equates to about 2.75gal of water below the centerline of the port. My false bottom sits approx 1-1/8" off the bottom of the pot, leaving about 6-7qt below the false bottom. That 6-7qt impacts my mash ratios and doesn't contribute to my grain bed depth, so I'd like to keep that volume as low as possible. Make sense?

 
Reply With Quote
Old 04-04-2011, 04:41 PM   #6
JohnTheBrewist
Recipes 
 
Nov 2010
SoCal
Posts: 617
Liked 8 Times on 7 Posts


Some of us do this, and Bobby made a nice write-up of how to do it. Just use a false bottom with a drain in the bottom of your MLT.

 
Reply With Quote
Old 04-04-2011, 07:27 PM   #7
beach
Recipes 
 
Apr 2009
Northern Indiana
Posts: 62

Adventures in Homebrewing has one here -> http://www.homebrewing.org/Stainless...om_p_1010.html

I've been using one for about 10 batches. As Bobby said, there is about 2 1/2 gal of slack space below the FB. I like not having to worry about hitting anything when I stir. It does reduce the overall capacity in the MLT however.

Beach
__________________
Hope Springs Eternal- Go Cubs Go!

Michiana Grain & Extract Association at: www.mega-brew.com

 
Reply With Quote
Old 04-04-2011, 07:44 PM   #8
EarthBound
Recipes 
 
Mar 2010
Beer Capital of the World
Posts: 1,069
Liked 12 Times on 11 Posts


Because there would be less space in your mash tun for grain; therefore, less volume/gravity yield. I usually almost completely fill my mash tun.
__________________
"You can do anything you set your mind to when you have vision, determination, and an endless supply of beer."

 
Reply With Quote
Old 04-04-2011, 08:00 PM   #9
Cold Country Brewery
Recipes 
 
Jan 2011
Superior, WI
Posts: 233
Liked 1 Times on 1 Posts


I understand with the 2" of "dead space." Would one just add 2" of water? I'm using a keggle so it would be a gallon or two of water. Or would that screw anything up?

EDIT: forget it, I didn't read Bobby's post good enough.

Reason: duh.

 
Reply With Quote
Old 04-05-2011, 01:57 AM   #10
Jones
Recipes 
 
Apr 2010
Garden City, Michigan
Posts: 27
Liked 1 Times on 1 Posts


I have a PICO style FB, with a dip tube going to the bottom.

 
Reply With Quote


Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Center Pickup w/ False Bottom or Side Pickup w/o False Bottom craigsphillips Equipment/Sanitation 14 01-22-2012 05:22 PM
Connecting false bottom to valve dboblitt Equipment/Sanitation 1 01-10-2011 08:38 PM
Pickup location from bottom on false bottom Darboy Equipment/Sanitation 1 03-01-2009 07:58 PM
False Bottom in MLT Craig311 Equipment/Sanitation 2 02-04-2008 09:24 PM
false bottom mot Equipment/Sanitation 2 01-21-2008 04:13 PM


Forum Jump