| ONLY for Sight Glass Spigots manufactured before September 2021 |
- Nut is used to secure a tight seal on the Sight Glass Spigot for the stainless steel Berkey systems
- Each Berkey Sight Glass Spigot comes standard with a nut; in case of loss or damage, nut may be purchased individually as a replacement
- For Sight Glass Spigots manufactured before September 2021