Author Topic: Star San suck back  (Read 2156 times)

Offline denny

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Re: Star San suck back
« Reply #15 on: November 29, 2017, 04:56:31 PM »
The OP wasn’t crashing. He lowered the temp 5°

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Offline klickitat jim

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Re: Star San suck back
« Reply #16 on: November 29, 2017, 10:57:13 PM »
The OP wasn’t crashing. He lowered the temp 5°
.

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Offline rdunphy

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Re: Star San suck back
« Reply #17 on: January 04, 2018, 04:30:27 PM »
As a side note I recommend making one of these the eliminate suck back.




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Question...Can you still get suck back into your fermenter once all the star san has been sucked into the first container from the second container? I imagine it would take a lot of force, but is it possible?

Offline mchrispen

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Re: Star San suck back
« Reply #18 on: January 04, 2018, 05:00:26 PM »
As long as the volume of star san in below the level of the lid, it should not. It would simply create a vacuum in the headspace of the first connected jar. Assuming the connector to the blow off tube is at the level of the lid, and is not touching any of the liquid volume.

Offline BrewBama

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Re: Star San suck back
« Reply #19 on: January 04, 2018, 07:11:44 PM »
As a side note I recommend making one of these the eliminate suck back.




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Question...Can you still get suck back into your fermenter once all the star san has been sucked into the first container from the second container? I imagine it would take a lot of force, but is it possible?

There is no way as long as it is lower than the lid. The liquid simply moves from one jar to the other


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Offline zman51

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Re: Star San suck back
« Reply #20 on: January 08, 2018, 04:40:15 PM »
Do you know who sells the kits?

thx


As a side note I recommend making one of these the eliminate suck back.




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That is awesome!  Did you make that anti suck back device or buy the drilled lids and fittings?

I made mine but the kit is avail online if you choose not to.

Two plastic coke bottles and aquarium tubes, and a 4mm to 7mm connection is cheap.
Use these as caps. They can break, so it’s good to have a few extras.
http://s.aliexpress.com/yUVn2Iny


There ya go.


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Offline BrewBama

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Re: Star San suck back
« Reply #21 on: January 08, 2018, 10:37:13 PM »
Huntsville AL

Offline Robert

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Re: Star San suck back
« Reply #22 on: January 17, 2018, 10:15:10 PM »
As a side note I recommend making one of these the eliminate suck back.




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Quick before dinner project.  Realized I had everything I needed. (I remembered seeing this a while back.) Thanks for the idea!
https://drive.google.com/file/d/1YlHgJM6ZSsSRQ3TByRKzovYqEbs-J5F5/view?usp=drivesdk

EDIT Note: a Forstner bit drills a Mason jar lid very cleanly!
« Last Edit: January 17, 2018, 10:20:04 PM by Robert »
Rob
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Offline BrewBama

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Re: Star San suck back
« Reply #23 on: January 17, 2018, 10:23:59 PM »
It’s pretty cool to put the liquid in the right jar and when fermentation starts the liquid is pushed to the left jar.


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Offline Robert

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Re: Star San suck back
« Reply #24 on: January 17, 2018, 10:28:36 PM »
It’s pretty cool to put the liquid in the right jar and when fermentation starts the liquid is pushed to the left jar.


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Thanks, I think I have just enough vinyl tube wet to make another "dip."  But why not just leave the right jar as a "buffer" for any blown off material and have the left as a sort of double airlock?  I was thinking that way the Star San stays clean until crashing.
Rob
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Offline BrewBama

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Re: Star San suck back
« Reply #25 on: January 17, 2018, 10:31:08 PM »
I can’t see a reason not to.


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Offline Robert

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Re: Star San suck back
« Reply #26 on: January 17, 2018, 10:35:30 PM »
Cool. Thanks again for the "plan and parts list!" Pictures worth, well, lots of words.
Rob
Akron, Ohio

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Offline Robert

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Re: Star San suck back
« Reply #27 on: February 15, 2018, 02:30:49 AM »
As a side note I recommend making one of these the eliminate suck back.




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Quick before dinner project.  Realized I had everything I needed. (I remembered seeing this a while back.) Thanks for the idea!
https://drive.google.com/file/d/1YlHgJM6ZSsSRQ3TByRKzovYqEbs-J5F5/view?usp=drivesdk

EDIT Note: a Forstner bit drills a Mason jar lid very cleanly!

Improved -- simplified, more airtight, and metal-free --  version using plastic lids and grommets:

https://drive.google.com/file/d/1xZTT9XiR27j7wGb6fnvlCe8wX65hEfPd/view?usp=drivesdk
Rob
Akron, Ohio

"There is always a well-known solution to every human problem -- neat, plausible, and wrong."  -- Mencken

Il meglio è nemico del bene.

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Non illegitimes carborundum.

Offline The Beerery

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Re: Star San suck back
« Reply #28 on: February 15, 2018, 02:34:38 AM »
I would beg to differ on them being more airtight.  I specifically use the plastic ones for yeast storage because I will dent/collapse metal lids,  but the plastic does not.  If I shake my yeast up in those with plastic lids I can hear it hiss out co2 as well.


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Offline Robert

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Re: Star San suck back
« Reply #29 on: February 15, 2018, 02:42:54 AM »
I would beg to differ on them being more airtight.  I specifically use the plastic ones for yeast storage because I will dent/collapse metal lids,  but the plastic does not.  If I shake my yeast up in those with plastic lids I can hear it hiss out co2 as well.


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It's not the seal of the lid that was the problem, it's the connections.  It is impossible to get a clean hole and a good seal with washers on a metal mason lid (I've tried many versions over the years,) and worse with the version I copied above using lamp nipples, the tubing does not seal like on a barb.  I tested this with some pressure and it's definitely an improvement. No hiss. If you want to improve it further (I may before actually using this) an o ring inside the lid would be an option.  Or I could spend quite a few grand on a pressure fermentation system I suppose.
Rob
Akron, Ohio

"There is always a well-known solution to every human problem -- neat, plausible, and wrong."  -- Mencken

Il meglio è nemico del bene.

De gustibus non est disputandum.

Non illegitimes carborundum.