Blow off tube - no mess when wine decides to leave the DJ

Postby Chippy_Tea » Fri May 09, 2014 19:54

I originally made a blow off tube because my 30 bottle Rose kit fermented so vigorously it emptied the small airlocks i have.

Here is a video of mine in action on day one, it does not look to be bubbling much but believe me by day 2 it can easily empty a "wilco handy airlock" in minutes - View My Video

Blow off tubes were/are used when fermentation is so vigorous that your wine (beer/cider) makes a break for freedom, its a lot easier and quicker to empty the container than clean all the muck out of an airlock.

The how to bit -

Cut the bottom off two airlocks (the part that goes into the bung) then get a short piece of syphon tube, heat the tube ends in hot water and insert the airlock tubes (you may only need one i will explain later)

Get something that will hold a little sterilizer or water or whatever you prefer (i use a small glass vinegar bottle) push one end into it until it is at the bottom and put enough sterilizer or water in to just cover the end of the tube, if you use a bottle a good tip is to sealed the top with blu-tack leaving a small hole for the CO2 to escape.

Put the other end into the grommet in the FV lid and after a while it will start bubbling and this time you will not lose any sterilizer, it also helps catch any wine escaping due to an overly vigorous fermentation.

The reason i used two airlock tubes is it seems to quieten the bubbling down, my big FV is in the house and it gets annoying after a while.


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Last edited by Chippy_Tea on Sun Jun 01, 2014 14:51, edited 15 times in total.

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Re: Blow off tube

Postby krazypara3165 » Fri May 09, 2014 20:00

Good one chippy! Think I may need to do this!!

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Re: Blow off tube

Postby linf » Fri May 09, 2014 20:01

Great idea,thanks :thumb:
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Re: Blow off tube

Postby Chippy_Tea » Fri May 09, 2014 20:09

I have edited the original post to add a video of mine in action. :thumb:

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Re: Blow off tube

Postby EvansTheSteam » Fri May 09, 2014 21:00

Why steriliser solution, why not just water?

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Re: Blow off tube

Postby krazypara3165 » Fri May 09, 2014 21:30

EvansTheSteam wrote:Why steriliser solution, why not just water?


I would imagine due to the fact that negative pressure could potentially draw liquid back into the fv?

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Bottled:
Galaxy Pale Ale, Woodfordes Wherry, Bella Brew Pale Ale, Strawberry and vanilla Pale Ale, Mixed fruits cider, Elderflower and grapefruit fizz.

Maturing:
Rhubarb Wine, WOW rose', Elderberry wine, Mixed berries wine, Elderflower and grapefruit wine, Elderberry wine.

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German Pilsner, Guinness Clone, Chateau De Roi selection kit, Strawberry and lime cider.
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Re: Blow off tube

Postby EvansTheSteam » Fri May 09, 2014 22:31

Not so sure I'd want steriliser in my brew!
Apart from anything else, a "suck back" is very unlikely.

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Re: Blow off tube

Postby krazypara3165 » Sat May 10, 2014 06:56

EvansTheSteam wrote:Not so sure I'd want steriliser in my brew!
Apart from anything else, a "suck back" is very unlikely.


true but I would imagine if it was a small amount of star san it would be fine.

I did recall there being a thread on TOPOS where someone used this method and the blow off was in a 2l bottle of steriliser and it had sucked it all into his brew!

Kegged:
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Bottled:
Galaxy Pale Ale, Woodfordes Wherry, Bella Brew Pale Ale, Strawberry and vanilla Pale Ale, Mixed fruits cider, Elderflower and grapefruit fizz.

Maturing:
Rhubarb Wine, WOW rose', Elderberry wine, Mixed berries wine, Elderflower and grapefruit wine, Elderberry wine.

Next Up:
German Pilsner, Guinness Clone, Chateau De Roi selection kit, Strawberry and lime cider.
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Re: Blow off tube

Postby EvansTheSteam » Sat May 10, 2014 09:01

I think a non-return valve would sort that problem.

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Re: Blow off tube

Postby krazypara3165 » Sat May 10, 2014 09:02

EvansTheSteam wrote:I think a non-return valve would sort that problem.


Never even thought of that, i have several knocking around too as they were used in my aquarium setup!

Kegged:
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Bottled:
Galaxy Pale Ale, Woodfordes Wherry, Bella Brew Pale Ale, Strawberry and vanilla Pale Ale, Mixed fruits cider, Elderflower and grapefruit fizz.

Maturing:
Rhubarb Wine, WOW rose', Elderberry wine, Mixed berries wine, Elderflower and grapefruit wine, Elderberry wine.

Next Up:
German Pilsner, Guinness Clone, Chateau De Roi selection kit, Strawberry and lime cider.
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Re: Blow off tube

Postby Chippy_Tea » Sat May 10, 2014 10:45

EvansTheSteam wrote:Why steriliser solution, why not just water?


You are right water would do the job but as i always sterilize the tube (you often get condensation in the first few inches that could drip back into the bucket) i have always used it in the bottle as well.


I think a non-return valve would sort that problem.


There really is no need, i have never had whatever was in the container go back to the FV.

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Re: Blow off tube

Postby chrig » Sat May 10, 2014 12:06

When I use a blow off tube I tend to loop the tube round in a circle and clip the open end to a cupboard above. And puy boiled water The tube itself, you don't need much

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Re: Blow off tube

Postby EvansTheSteam » Sat May 10, 2014 17:10

chrig wrote:And puy boiled water The tube itself, you don't need much

Can you rephrase. :scratch:

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Re: Blow off tube - no mess when wine decides to leave the D

Postby jkp » Sat May 10, 2014 17:16

The only time I could see this being a problem is if you crash cooled the DJ. In that case you might have the water sucked back up.
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Re: Blow off tube - no mess when wine decides to leave the D

Postby chrig » Sat May 10, 2014 17:26

Image

Bit like this quick mock up, usually without the racking cane.

Once it slows down or you chill it then you try to remember to replace with a normal airlock

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Re: Blow off tube - no mess when wine decides to leave the D

Postby Chippy_Tea » Sat May 10, 2014 18:06

So you cannot open the cupboard for two days. :lol: easier just to stick the end in a cup of water. ;)

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Re: Blow off tube - no mess when wine decides to leave the D

Postby EvansTheSteam » Tue Jun 03, 2014 12:50

I use a different method very loosely based on the Burton Union system.


For my DJs

Image



For my FVs

Image

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Re: Blow off tube - no mess when wine decides to leave the D

Postby Ciderhead » Tue Jun 03, 2014 14:59

This forum just keeps getting better and better :notworthy:
wtf is that :o have you ever thought of dragons den :clap:

I'll try and answer my own question but it brings e back to that tv show where you had to guess what function the implement had, and Tim Brook Talor was on it.
So I am guessing its totally open and towel on top is just to keep out flies.
Yeast blows off with co2 into vessel above and is captured for harvesting, if its liquid enough with what looks like a good diameter blow off tube it just falls back in and goes again.
The Co2 as it heavier than air keeps the whole lot sterile, brilliant!

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Re: Blow off tube - no mess when wine decides to leave the D

Postby EvansTheSteam » Wed Jun 04, 2014 14:41

Spot on!
It stops all the mess and you get your yeast/wort back!
Necessity is the mother of invention.

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