Berkey Genuine Priming Button to suit Black Berkey Purification Elements and PF2 & PF4 Fluoride Filters
For use with:
- Black Berkey Purification Filter Elements
- Berkey PF2 Fluoride Filter Elements
- Berkey PF4 Fluoride Filter Elements
To remove air from Black Berkey Purification Elements during inital setup and during during regular cleaning. Also used with PF2 & PF4 Fluoride filters to flush before initial use. Same as supplied with new systems and new filter elements.