The standard Nalgene polyproylene quick action spigot (blue handle and body, white threaded ring for connection to carboy) Cat. No. is 6422-0010 or 6422-0010PK. If the original carboy purchased was a solvent-resistant fluorinated carboy, the replacement (mostly white, with a blue cap on the handle) is the Nalgene Quick-Action Tefzel ETFE Spigot, Cat. No. 6432-0010.