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 Post subject: Beer serving pipe length and diameter
PostPosted: Tue May 03, 2016 12:12 pm 

Joined: Tue Apr 09, 2013 10:17 pm
Posts: 175
Location: Bristol
Hi All,
What's the average length for 3/8 pipe in a normal kegerator setup, do you need to swap it out if your beer pressure changes, ie I have a wheat and a normal bitter?
What other kit do I need to adjust pressure ?

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 Post subject: Re: Beer serving pipe length and diameter
PostPosted: Tue May 03, 2016 2:04 pm 
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Joined: Sat Nov 20, 2010 1:06 pm
Posts: 2275
Location: Bristol
You are aiming for about 1psi at the tap.

I think 3/8" pipe drops 0.5psi per foot. You also lose/gain 0.5psi for each foot above or below the keg the tap is. The equivalent drop for 3/16th line is 3psi.

You can set one pressure with the cylinder regulator and use any number of secondary regulators to reduce the pressure for individual lines - or use a gas management board.

Flow control beer taps can be handy too.

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 Post subject: Re: Beer serving pipe length and diameter
PostPosted: Tue May 03, 2016 3:35 pm 

Joined: Wed Nov 28, 2012 4:29 pm
Posts: 467
Location: Bristol
darrenw wrote:
Hi All,
What's the average length for 3/8 pipe in a normal kegerator setup, do you need to swap it out if your beer pressure changes, ie I have a wheat and a normal bitter?
What other kit do I need to adjust pressure ?


You are much better of stepping down to 3/16", the conversion is easy and you will only need about a metre of pipe (which is much more flexible than 3/8"). Much better all round imo.

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 Post subject: Re: Beer serving pipe length and diameter
PostPosted: Tue May 03, 2016 9:42 pm 

Joined: Wed Dec 17, 2014 9:03 am
Posts: 77
On 3/8" I got a lot of fobbing with a metre from the keg to the tap, swapped it for a metre of 3/16" and no problem.


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 Post subject: Re: Beer serving pipe length and diameter
PostPosted: Wed May 04, 2016 10:08 am 

Joined: Tue Apr 09, 2013 10:17 pm
Posts: 175
Location: Bristol
Thanks all (didn't have notifications on),

I've got 4m of 3/16 and a couple of 3/8th to 3/16 connectors from this supplier http://www.ebay.co.uk/usr/fluidairproducts, would have needed about 50ft of 3/8th to get balancing right

Calcs I used: http://www.mikesoltys.com/2012/09/17/de ... erator/#CO that come out at 12.59ft (3.83m) 15psi force carb pressure

or brewers friends : http://www.brewersfriend.com/2009/07/18 ... -pressure/

L = (P -(H x .5) – 1 ) / R
L = 15/3 = 4ft (1.2192m)

So slight difference but think 4m will cover all bases

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