Fermenter King Junior


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SKU: 9138

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Fermenter King Junior is the world's most affordable 20L pressure fermenter and keg.

Fermenter King Junior utilises clear PET material.

Features include:

  • Crystal Clear PET Tank
  • Pressure Lid fitted with Pressure Relief Valve rated to 2.4Bar
  • Stainless Steel Ball Lock Gas and Liquid Post
  • Silicone Dip Tube with Stainless Steel Float Ball
  • Requires a spunding valve attached to an MFL type gas disconnect (not supplied)  to control the internal pressure of your fermenter.
  • After fermentation, you can carbonate your beer in the Fermenter King Junior.
  • Attach Fermenter King Junior to your tap system or any hand held tap and serve directly out of the fermenter.
  • Alternatively,  transfer carbonated beverages easily from Fermenter King Junior into kegs, mini kegs and growlers.


  • 259.4mm Wide at base
  • 586.9mm Height to top of posts

Download Instructions Manual

Keg King highly advises using homebrew-grade cleaning chemicals like phosphoric acid-based sanitisers and non-caustic cleaners. Follow the recommended dilution rates on the product labels or from reputable homebrew books and magazines.

Phosphoric acid sanitisers should have the pH range between 2.2 - 2.8. This is about a 1.5 - 2ml of sanitiser in 1L of water. Above the pH of 2.8, the sanitiser fails the 30-second test to prevent microbial growth. Below 2.2ph range, the sanitiser will affect the flavour of beer. 

Heat does more damage to PET fermenters than chemicals. At  55 degrees Celsius, the PET will soften and deform permanently. It is best to allow hot cleaning solutions to cool down to at least 30 degrees C before use.

Adhering to these recommendations will ensure the integrity of your fermenter tank for its useable life.