The manufacture has made a change in the plugs utilized in the Berkey Light® systems. The exit holes in the upper container of the Berkey Light® systems has slightly increased. Accordingly, we have also slightly increased the diameter of the blocking plugs. This change was made so that the hole plugs used for the stainless steel systems are universal and can be used with the Berkey Light® systems.
The new larger size hole plug will fit into all Berkey Light® systems with a production year of 2014 or later. All Berkey Light® systems with a production year of 2013 or earlier will require the smaller hole plugs. The manufacturing date on the system can be found on the embossing on the bottom of the upper chamber. Look for a circle with a two-digit number in it. If the number in the middle of the circle is 14 or larger, then the larger hole plugs are needed. If the number in the circle is 13 or lower, then the smaller plugs will be needed. If you require replacements for the smaller hole plugs, please contact customer service for availability at 1-800-350-4170.