Whether Black Berkey® filters or Berkey® PF-2™ filters, it is necessary to prime them before their first use or after a long storage time.

You can refer to the Black Berkey® water filter priming document and also the PF-2™ filter priming.

To facilitate priming Black Berkey® filters, or if space under your faucet is limited, there is also a convenient priming pump that allows you to prime Black Berkey® filters anywhere, anytime.