Red PRV 1881 Cap Combo (35 psi) - KB10537 BFYeast With the optional filter paper

With the optional filter paper (BE481) you can also eliminate large chunks of material that typically give unwanted fiber to your drinks

oxygen barrier bag that unlike plastic jugs does not allow any oxidation to occur

Use 10 grams of sterilized tap water

and the environment

Red PRV 1881 Cap Combo (35 psi) - KB10537 BFYeast With the optional filter paperDesigned for use with the PCO38 Tapping Head. With female PCO1881 threads, it can also be used with the FermZilla Collection Container or Hop Bong Sight Glasses. The Red PRV is rated to 35 psi (2. 5 BAR). Warning: Never exceed the pressure capabilities of your vessel. PRV's are not spunding valves!