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	FORUM ON BEER, HOMEBREWING, AND RELATED ISSUES
		Digest Janitor: pbabcock at hbd.org


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Contents:
  Re: Pilsner bittering hop ("Pat Casey")
  air driven diaphragm pump for filling (Matt)


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Date: Tue, 6 Apr 2010 13:28:25 +1000
From: "Pat Casey" <pat at bmbrews.com.au>
Subject: Re: Pilsner bittering hop

Rowan,

Either Perle or Northern Brewer for orthodoxy. You could also try Amarillo 
or Cascade - both of these hops go well with Saaz. Centennial could also be 
a possibility. Remember you are using these hops as bittering, not aroma 
hops so restraint is necessary.

Generally I use only two hop additions, 45 and 3 minutes. One of my little 
"rules" is to use approximately equal weights of the two hops at 45 minutes, 
and certainly to not let the weight of the bittering hop exceed more than 
half the weight of hops used overall.

Pat
www.AbsoluteHomebrew.com.au





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Date: Tue, 20 Apr 2010 09:15:30 -0700 (PDT)
From: Matt <baumssl27 at yahoo.com>
Subject: air driven diaphragm pump for filling

I had an idea for bottling beer from vessels that are
too heavy to move and can't be pressurized (such as a
wine demijohn).  I believe little air-driven diaphragm
pumps (such as Grainger Item 2ERY7) can provide beer
flow at constant pressure, and have no problem when a
valve is shut on their outlet.  They are also self
priming.

Suppose we connect the pump's inlet a racking cane
in our beer vessel, and connect the outlet to a filling
apparatus (perhaps as simple as a spring-type filling
wand).  Can we now just turn on the pump and start
filling bottles to our heart's content?  It seems that
connecting a pump in this way is almost equivalent to
putting constant top pressure on the beer vessel.

The one problem I can think of offhand is that the pump
may not work at sufficiently low pressures (and thus
dispense beer way too fast).  But this could probably be
solved by adding some friction or choke to the outlet.  
The other issue is that you need a nice air compressor.
Beyond that, though, am I missing any major obstacles?

Matt


      


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