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BrewBuilt™ Kit for Fermenting Under Pressure

BrewBuilt™ Kit for Fermenting Under Pressure

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A professional level hardware kit that allows for safe pressure fermentation in an X1 Uni Conical. The hardware in this kit is the same hardware professional breweries would use to do pressure fermentations. 

The kit is built around a commercial Spunding Valve that allows you to set your desired fermentation pressure, blowing off excess pressure from the X1 whenever it exceeds your set point. The clear cup holds liquid acting as an airlock and allowing any krausen to exit. The commercial grade Pressure Relief Valve (PRV) is designed to blow off at 15 psi, ensuring that you never exceed the X1's maximum pressure rating. The commercial PRV has a much larger diameter opening than the PRV built into the X1 lid. The PRV in the lid is not designed to handle fermentations as it could potentially clog with krausen during a fermentation. When fermenting under pressure, it is important to have multiple backups for releasing excess CO2.

The oil filled pressure gauge is a high-quality gauge that is sealed on the bottom to keep krausen out and help ensure a consistent reading.

Foam Axe is a silica based krausen cutter used by commercial breweries to reduce krausen blow off while increasing foam retention in your beer. Using Foam Axe is required for every batch fermented under pressure, but we recommend it for all batches fermented in your X1. Foam Axe helps keep krausen out of PRVs and other hardware which is always a good idea.


  • Commercial Grade BrewBuilt Spunding Valve
    • 0-2 BAR (0-30 psi)
    • Hand Adjustable Blowoff
    • 1.5" tri-clamp Connection
    • Made from 304 stainless steel with plastic liquid cup
  • Tri-Clamp Pressure Relief Valve (PRV)
    • Calibrated to 1 BAR (14.5 psi)
    • 1.5" tri-clamp connection
    • Made from 304 stainless steel
  • Sealed, Liquid Filled Pressure Gauge
    • Calibrated to 2 BAR (30 psi)
    • 1.5" tri-clamp connection
    • Made from 304 stainless steel
  • CellarScience Foam Axe Krausen Reducer
    • Reduces krausen build up inside the fermenter
  • Connection Hardware
    • (3) 1.5" T.C. Clamps
    • (3) 1.5" EPDM T.C. Gaskets


WARNING! The use of the BrewBuilt Kit for Fermenting Under Pressure is required for performing Pressure Fermentations in your X1 conical. The PRV built into the lid is not designed to be the only release point during a pressure fermentation. 

WARNING! The use of Foam Axe is required to reduce krausen (foam from fermentation) production in the fermenter. 

WARNING! Always release pressure, then remove the PRV built into the lid to ensure the conical is completely depressurized before removing fittings or the lid clamp. Failure to do so can result in personal injury. 


Item # CONP728
Shipping Eligible for Free Shipping Program
Availability California - In Stock
Pennsylvania - In Stock
Weight 9 LBS