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Knockout back into Steam Kettle Issue (Kettle Sour)

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  • Knockout back into Steam Kettle Issue (Kettle Sour)

    Currently we run a 3bbl electric system. We do a decent amount of Kettle Sours and Whirlpool additions at low temperatures. As a result we knockout back into the kettle. We are upgrading to a steam 15bbl brewhouse. The manufacturer advised this will cause the kettle to collapse. I understand the physics behind it but is this really possible? Does anyone do this, is it possible?

  • #2
    So your basically saying you recirculate your chilled wort back into the kettle? For kettle sours you'd chill back into the kettle until you hit 120 degrees or so?

    I don't see why that would be a problem with a steam kettle, the temperature change would be very gradual, but I'm no engineer.

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    • #3
      One option is to knockout into a sanitized fermenter, and then push with CO2 back to the kettle.
      Linus Hall
      Yazoo Brewing
      Nashville, TN
      www.yazoobrew.com

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      • #4
        I do this into our 15BBL direct fire kettle with no problem.....not sure if DF or Steam would make the difference but we do it atleast twice a month.

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        • #5
          Recirc back into our 30 bbl steam kettle all the time for a kettle sour. Out the bottom side and in via the whirlpool arm. Cheers
          Joel Halbleib
          Partner / Zymurgist
          Hive and Barrel Meadery
          6302 Old La Grange Rd
          Crestwood, KY
          www.hiveandbarrel.com

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          • #6
            Collapse?

            No vessel should ever collapse. I've got no idea why a manufacturer would say this. Especially about a typical kettle. Kettle souring is done all the time like this. What, exactly, would collapse?
            Phillip Kelm--Palau Brewing Company Manager--

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            • #7
              I was scratching my head on this when a saw the post back in January. But now I think it means that without a separate vacuum breaker on the steam jacket, if the steam valve is closed, you could create a vacuum on the jacket when you cool the kettle. But I'm just guessing.

              Regards,
              Mike Sharp

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