Berkey Stainless Steel System Blocking Plug w/ wing nut

The Berkey® blocking plug and wing nut are used to block the holes of the upper chamber of any stainless steel Berkey system that are not occupied by additional Black Berkey® Purification Elements. All stainless steel systems come standard with the proper amount of blocking plugs; in case of loss or damage, plugs may be purchased individually

Compatible with: All stainless steel Berkey systems. Not recommended for the Berkey Light system
Kit Includes: Blocking plug comes with wing nut