Answers.Body: <p>The short answer is - "It depends, probably not".</p>
  
  <p>Bottles are usually rated for <code>Volumes of CO2</code>.</p>
  
  <p>Champagne bottles are typically rated for 7 volumes.
  Wheat beer bottles should take around 5 volumes.
  Ales/Lager beers are normally carbonated at 2-3 volumes.</p>
  
  <p>However, flip-top bottles (I assume you mean the ones with the rubber seal) are produced in both CO2-rated and cheap un-rated beverage bottles - found in supermarkets.</p>
  
  <p>As you say 1.044 is quite high - plenty of beers <em>start</em> around that point.  This could generate a lot of CO2 (> 15 volumes) if it fermented out.</p>
  
  <p>The actual CO2 volume calculations are discussed in <a href="https://homebrew.stackexchange.com/a/11498/13385">another answer</a>.</p>
  
  <p>It might be better to transfer the mead to PET(plastic) bottles, and store them in a safe location.  </p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2018-09-18T04:10:59.183Z
Answers.LastActivityDate: 2018-09-18T04:10:59.183Z
Answers.UserDisplayName: Kingsley
Body: <p>I'm making mead, 3 lbs honey topped up to 1 gallon with champagne yeast. My final gravity is ~1.044. Still lots of sugar in there, but fermentation had all but stopped. I put it all into 1 Liter flip top bottles. Here's the question: have I just made bombs? How much pressure can fermentation-grade flip top bottles take? </p>
  
  <p>I know 1.044 is still kinda high; I don't need a lecture. I don't think that fermentation will start again, but if it does and this stuff pushes itself dry, how much pressure will that make, and can the bottles handle it?</p>
  
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2018-09-18T04:11:49.247Z
Comments.Text: What was the original gravity (OG) of your mead?   What yeast did you use?
Comments.UserDisplayName: Kingsley
Tags: <bottles><carbonation><bottle-conditioning><mead>
Title: How much pressure can a flip top take?
UserDisplayName: mtmurdock
ThreadText: # How much pressure can a flip top take?
  
  (Asked by: username_0 on 2018-09-18)
  
  I'm making mead, 3 lbs honey topped up to 1 gallon with champagne yeast. My final gravity is ~1.044. Still lots of sugar in there, but fermentation had all but stopped. I put it all into 1 Liter flip top bottles. Here's the question: have I just made bombs? How much pressure can fermentation-grade flip top bottles take?
  
  I know 1.044 is still kinda high; I don't need a lecture. I don't think that fermentation will start again, but if it does and this stuff pushes itself dry, how much pressure will that make, and can the bottles handle it?
  
  **Tags:** bottles, carbonation, bottle-conditioning, mead
  
  > **Comments:**
  > **username_1**: What was the original gravity (OG) of your mead?   What yeast did you use?  
  
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  ## 1 answers
  
  ### Answer by username_1 on 2018-09-18. Score: 1
  
  The short answer is - "It depends, probably not".
  
  Bottles are usually rated for `Volumes of CO2`.
  
  Champagne bottles are typically rated for 7 volumes.
  Wheat beer bottles should take around 5 volumes.
  Ales/Lager beers are normally carbonated at 2-3 volumes.
  
  However, flip-top bottles (I assume you mean the ones with the rubber seal) are produced in both CO2-rated and cheap un-rated beverage bottles - found in supermarkets.
  
  As you say 1.044 is quite high - plenty of beers *start* around that point. This could generate a lot of CO2 (> 15 volumes) if it fermented out.
  
  The actual CO2 volume calculations are discussed in [another answer](https://homebrew.stackexchange.com/a/11498/13385).
  
  It might be better to transfer the mead to PET(plastic) bottles, and store them in a safe location.
  
  
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