Priming button for Black Berkey and BOROUX Foundation Black filters

Features of the priming button for Black Berkey and BOROUX Foundation™ Black filters:

• The priming button is used to prepare or prime the Black Berkey filter elements or BOROUX Foundation™ Black filter elements for use in a water filter

• This rubber ring fits between the Black Berkey element or BOROUX Foundation™ Black filter element and a tap, so that the element can be “primed” under pressure, which eliminates small air bubbles in the Black Berkey element or BOROUX Foundation™ Black filter element to maximise flow. Carry out the same priming for the Fluoride and Arsenic filter elements

• The button is included in every set of Black Berkey elements and BOROUX Foundation™ Black elements (so also with the complete Berkey or BOROUX water filter); if it is lost, the button can be bought separately